Did the reviewer use the default, or high performance mode? They make no mention of it, while in the Nord 3 review, they used Performance mode for performance, and turned it off for battery life (which was odd).
So the too big performance delta could be explained by this. You should re-run the performance tests with this mode for consistency.
In general, nbc needs to work on testing CONSISTENCY. Different set of benchamrka apps, different srttings on the devices, then the buyer can't compare.
With a high-quality metal case, large battery, and fast charging, the OnePlus Nord 4 has the stuff to become a danger to even flagship smartphones, even though it is already available for less than 500 Euros (~$553). But the new SoC might spoil the party, so we take a more detailed look in our test.