I've consistently recommend notebookcheck as a great objective resource for years. However, I think what you're doing here is what many other sites do, tailor your reviews to suit price points rather than actual features. Focusing on the L380 Yoga, there's a very small difference in performance between it and the much higher price models, and in fact the L380 Yoga is the only model that can take 32GB RAM, which makes it head and shoulders better for some types of heavy lifting compared to the others. Yet, with a four core i7 processor it's apparently only good for word processing? Is it maybe the case isn't rigid enough, and other workloads demand dropping the computer on the floor?
Notebookcheck would also be doing a more consistent job if you'd determine whether the wifi performance was due to your model, as implied in the review, or a problem with the design generally.