@Asphodelus
Thanks for that well articulated and respectful response. As you point out, I agree we can indeed seek common ground while having differences as well. All in all I think we mostly agree, I think the pros and cons of these devices are mostly objective and it comes down to how you subjectively rate those in importance to yourself or other subjective factors.
It's great to hear you had good results. I know that repasting just on it's own can help the thermals of pretty much laptop, that combined with manually flashing the vbios makes a lot of sense and helps work around the biggest performance downsides of this laptop (thermal performance and the 80w vibes).
With that said I'm sure you can agree that an apples to apples comparison is very important, especially for a large amount of users that aren't prepared to go through those steps. Personally I won't be, with this laptop at least, which is why I chose the Asus. At this price I'm just not comfortable risking voiding my warranty. To me it makes a bit less sense for laptops at this price range, but makes a lot more sense for laptops at a lower price range where you aren't risking as much money. Also for an apples to apples comparison we'd have to see the gx701 re-pasted, it's thermals, and also what sort of overclocking you might be able to achieve on both given the same treatment. Reviews like notebook check just can't go into that sort of comparison, so they go stock to stock, which is honestly how most users will likely be using it. In many ways though this shows how impressive the gx701 is stock, that it has adequate thermals and runs the CPU and GPU at the higher clocks -stock-.
With that said everything you said mirrors the narrative here, that the MSI offers a lot of flexibility if you are wanting to crack it open and do various upgrades and modification. If you repast and flash a new vbios you can nearly get the same performance, if you want more RAM (or to swap out to a different set of RAM) you can do that, if you want more m.2 drives you can do that, etc. If you are someone who wants an expensive baseline to modify then it's a great choice.
Regarding the keyboard, though I agree key travel is important... For context I have used a lot of different laptops including still having an Alienware 13 R3 (I still love that OLED screen, can't wait for laptops with high refresh OLED screens). It has key travel of 2.2mm, so even more than the MSI. It's a great typing experience, the key travel is only part of the equation, how the keyboard is designed and especially the rigidity of the chasis in a laptop impacts it greatly (and the Alienware might be the most rigid keyboard chases I've seen to be honest). I've used the keyboard on the GS65 and it wasn't bad, but honestly I didn't feel it was great either. I was personally very surprised with the keyboard in the gx701. Not great key travel but it's designed to fully maximize that experience on it's limited key travel. The keys have a very confident snap to them that makes it a pleasure to type on.
For example I also have a surface pro 4 and it's typeover is only about 1.3mm key travel, though honestly it's typing is better than most laptops I've used due to it's quality design. Likewise you can actually get a lot of super cheap desktop keyboards that have high key travel but are not high quality products. With that said the GS keyboards (Steelseries sourced, which I'm a fan of, have an Arctis 7 headset that I love) are very good, but honestly the typing experience to me personally was a wash between the two. I felt the Alienware gets a better typing experience with its key travel personally.
All of this comes down to personal use however... I recommend people try these models in the store and see what you like. Likewise some reviewers have pointed out the extra wide touchpad in the gs75 and palm presses. That is an advantage of having the gx701 touchpad on the right, no more palm presses. Each individuals mileage may vary on any of this though.
I will point out that chasis stability is a clear advantage of the gx701 (even if upgradeability is a clear advantage of the gs75).
As far as gsync. It is indeed functioning gsync. It's easy to test, disable it and see tearing, enable it and no longer see tearing. The gx701 comes with gsync off and Optimus on (for shipping units, I think they did the opposite for review models), I didn't realize this and was wondering why I was seeing tearing. Enabled gsync mode (battery life is not a problem for me) and I see the glorious adaptive refresh rate and no stuttering or tearing.
So I'm not sure if you're aware but Nvidia officially has started supporting Freesync in Nvidia video cards on certain free sync monitors they approve the performance of (and there's a way to enable it for other monitors too I believe with non-approve free sync). Basically the gsync module in the desktop ensures consistent experience, but part of that is different monitors paired with different computers through different connections. An all in one laptop is a controlled experience. So basically they confirmed that yes Nvidia cards can do adaptive sync with free sync which has no extra chip. Gsync in these laptops are no joke and if you are used to it already it's really really hard to go back to a life without it. Much like going back to a 60hz monitor from a 120-144hz+ monitor. For me considering there was such strong options with gsync that eliminated the MSI models (I found the ge75 interesting too with it's full laptop 2080, but again no gsync and it was a bit too big).
I'm glad your enjoying your laptop, honestly I think these are both top tier laptops and people should choose the one based on what's important to them. I also think people should try these things in the store since a lot of laptop feel is very subjective, especially with keyboards (that surface type cover proved to me that a low key travel keyboard can indeed feel better than some high key travel ones for example).
@Viper2
You are disrespectful and acting like a troll, so unless you choose to engage in non-childish communications this will be my last response.
Keyboard placement is perfectly fine for many many people not using it on their lap (something you really don't do in gaming anyways due to the heat of all of these). They forward keyboard placement is actually superior to me and many others for such uses and no you don't have to keep it 6 inches away.
The stock performance of the Asus is indeed 10% better both in CPU and GPU. You can get better performance in the MSI by repasting and flashing your vbios (both extremely non stock steps, but good to know for people who are comfortable doing that and willing to risk their warranty). Most of that is nothing new however, every laptop can gain thermal performance by repasting. You can use liquid metal and gain 20 degrees or so and then overclock. You can do that in the gx701 too and maybe still exceed the same performance, I have yet to see a fair comparison in those scenarios.
These are both excellent laptops (hence good reviews among both across the web). For many the keyboard placement is in fact better (the touchpad in front of the keyboard has always been a laptop abomination, you don't use your mouse in front of your keyboard) and it boils down to a couple tradeoffs where the MSI has greater upgradeability and is a bit lighter with a traditional placement of keyboard and touchpad (though some have reported palm presses due to the touchpad being too wide). The Asus performs a healthy bit better (10% is not insignificant and gives some favorable number sin fps per dollars), has significantly better build quality (the flex is like night and day IMHO and that's important to some not to others, and has gsync plus Optimus. Gsync is an immense feature that's finally landed on laptops. For some (like me) that's a deal breaker right there. You can never get gsync on that MSI screen. Likewise the gx701 screen is indeed less bright and their unit was less color accurate, though it does have a higher contrast and black level (and brightness distribution).
Another pro of that funky design is the hottest part of the laptop isn't under your keyboard so it doesn't get uncomfortable and hot, something all gaming laptops typically have a problem with.
It's all pros and cons and you can make your own decision. There's a reason there are so many positive reviews. Linux Tech Tips for example in their GS75 video couldn't recommend the highest spec GS75 since the gx701 performed better all around, they were very disappointed with the flex of the gs75 (they show the flex in the video) especially for the price, and gsync was a good feature at that price point (some cheaper laptops have gsync even). On their gx701 review they talk about the keyboard and touchpad and they found it perfectly good and even more natural in the end (that touchpad on the right does feel so right when you use it for a bit, more like a mouse on the right). They basically said just spend a bit more and get the gx701, but they did recommend the down spec version of the gs75 as good values.
Of course that's just one set of opinions, but there are others just like that as well as those willing to sacrifice some build quality for a more conventional laptop design and upgrade options. Don't trash peoples choices when there are many reviewers coming to the same conclusions. They are both good devices and have different pros and cons. That cheaper build quality nets you some weight savings for example, for some that 0.8 pounds is an important difference, for others it's worth the weight.
Again that's it, hope you have a nice life, but please stop being childish.