I’ll take a look later but quick check he is using two different devices which means its not identical hardware/ firmware.

Also there are many many many more cases where performance has been the same

reddit.com/…/better_game_performance_on_windows_o…

And countless others who see no difference between windows and Linux.

Most times if there is is due to dxvk / Proton fixing a game bug/bottleneck, or invalid testing with not identical settings/hardware.

There is no way windows is using more power and giving lower clock rates without some other bug effecting it.