Recent testing revealed that Arch Linux, Pop!_OS, and even Nobara Linux, which is maintained by a single developer, all outstripped Windows for the performance crown on Windows-native games. The testing was run at the high-end of quality settings, and Valve's Proton was used to run Windows games on Linux.
“on that one specific machine.”
You’re missing that part from your premise and it’s the important one.
Notice how they didn’t use one with an Nvidia GPU… Or even hardware released this year either…
Edit: Aaaw, I made you angwy and you downvoted me :(