elbert :
I wouldn't suggest either a 1070 nor the 1080 on 1080p. Probably should have tested with a more normal 1060 6GB at that resolution. Those willing to pay high prices for both the CPU and GPU should be running at 1440p. The game benchmarks are unnaturally skewed.
The biggest thing to look at in the game benchmarks is how unutilized the Ryzen CPU's are. We will probably see the Ryzen R5 quads running the same FPS for a few hundered less then all but the old 8350 on April the 11th.
Also it looks like AMD is gearing up a new socket with 8, 12, and 16 cores on an X390 motherboard. At the current pricing the 16 core could be lower priced than Intel's over priced 6900 8 core.
http://www.techspot.com/news/68407-tackling-subject-gpu-bottlenecking-cpu-gaming-benchmarks-using.html
1080p may be the most common resolution that gamers use, but it's not the most demanding. By using a top-of-the-line GPU, the testers know that the GPU won't be holding the performance back (same reason why they've tested with 16GB of RAM for some time, even though you still really only need 8GB on 64-bit Windows for gaming). They may vary that somewhat depending on the game -- Techspot's Dark Souls III testing, for example, had to go up to 1440p for their CPU benchmarking (http://www.techspot.com/review/1162-dark-souls-3-benchmarks/page5.html), because the PC version was artificially frame-capped at 60FPS, & their GPU testing showed that you had to go down to a 4th- or 5th-tier GPU (like a GTX 780 or R9 380X) to start dropping below that cap with the i7-6700K.
By using a powerful GPU at a resolution where it's going to idle along without any trouble, the testing allows them to
definitively show how a given CPU (in this case, the Ryzen CPUs) perform against other chips.