Source is this video:
Windows Was The Problem All Along - Dave2D
We could obviously compare performance between windows and steamOS before on the steam deck, or between windows and Bazzite on other handhelds. But this is the first time we have had official windows and SteamOS builds for the same hardware.
I also wonder how much of it is RADV vs AMDGPU drivers. Wonder what the result would have been if the Deck used the AMDGPU drivers instead. Saying it is just “the magic of Linux” papers over a lot.
I think it doesn’t really matter, in the end the question is, do I get a better experience as a consumer on Linux or Windows?