You don't have to be a super genius to assume Nvidia is making sure developers are using the features unique to the Maxwell 2 architecture that give it a significant performance advantage vs every other arch out there including their previous generation. Everything from Nvidia and AMD is pretty much in line where you would expect, just the GM20x cards are way out of whack. It is ridiculous to try and hypothesize that NVidia is in cohorts with game developers and they are both spending time crippling every architecture about the same that isn't GM20x based. The not retarded viewpoint is that there are certain feature that GM20x based hardware is simply better at than anything else, and some games take advantage of this, and some don't.
Don't worry about it. As someone brilliantly stated in another thread. You don't want the performance advantage now. When you really want it, is 2 years from now. So, if you are using AMD, just wait. 2 years from now when AMD gets the drivers right, the Fury X will be faster than the 970.
Current games 70 vs 80 fps amd and nvidia respectively, no conceivable difference in performance. Future games 53 vs 60 nvidia and amd respectively (without gysnc nor freesync). I can now assure you with just a a few percent drop in performance or lost fps the amd card will provide a better gaming experience. With a few different ways to pick at this bolded area I'll leave just this one.