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.
But it comes with consumer devices. Preinstalled, just like Windows does in whatever version they compares here.
So? That still doesn’t change the fact that SteamOS is a stripped down version of Linux that can’t do everything a Linux computer can do.
So the comparison is flawed.
It is like comparing a Swiss army knife to a regular knife. The regular knife is going to be better at cutting, but it won’t do any of the other things a Swiss army knife can do