Well those 3 fps more on linux is a margin of error, as long as it has same or better performance than windows, I am happy. Keep in mind though many of the games don't run natively but through an emulator so is a great achievement.

I'm really happy with my choice of giving up on windows completely, I'm never going back

You must reminded that most game companies built their games for Windows OS only.  And Linux can has such closing scores is already amazing. 

Writing this on a home workstation that I recently converted from W11 to CachyOS - wish I'd done it sooner. Runs flawlessly. Considering to do the same with my work laptop now...