NVIDIA 387.34 vs. Linux 4.15 + Mesa 17.4-dev Radeon OpenGL/Vulkan Performance
Dota 2 with OpenGL at 4K shows the RadeonSI performance coming in short with the RX Vega 64 still being much lower than a GTX 1070.
When running with the RADV Vulkan driver, all Radeon graphics cards were well slower than the GeForce GTX 1060. As said already, new AMDGPU-PRO tests are coming soon.
While the Dota 2 OpenGL performance is much more competitive with NVIDIA's Linux driver.
Dawn of War 3 with Vulkan does better on Radeon than the Dota 2 Vulkan test.
But it's with the Dawn of War 3 OpenGL performance where Radeon is more competitive with NVIDIA given the current Linux graphics drivers.