Are you deliberately not reading my actual comments? Tell me which statement isn't true:
The only game on Windows 10 that uses both APIs as far as I can tell is DOTA 2. And from the videos I've seen DX12 & Vulkan basically come off better and worse depending on what's being rendered on screen. No clear winner there.
I've said before that Mad Max performs better on my Linux box using Vulkan than my Windows box running DX11. As long as it performs better, I'm happy to use Vulkan, but as a gamer I want to use whatever works better, no matter what it is and no matter what machine I'm on, Windows or Linux.