NVIDIA 381 Linux Beta vs. Linux 4.11 / Mesa 17.1 Radeon Comparison
Dota 2 at 1080p with Vulkan has the Radeon R9 Fury on RADV running just faster than a GTX 960. The GTX 970 and faster were meanwhile CPU bound at this resolution.
Dota 2 is a much more interesting benchmark at 4K, where the R9 Fury with OpenGL performs around the speed of the GTX 980.
But with the Vulkan renderer, the R9 Fury is slower than the GTX 970 due to RADV being less mature.