Dankpods used 12 computers with different hardware to test the performance of 5 games in 1080p and 4K, comparing the average fps results of the games' built in benchmarks to determine which OS ran the game better across the same hardware: Windows or Bazzite.
Some notes on methodolgy under this spoiler
Each game uses the same in game graphics settings in Windows and in Linux. The Linux distro used was Bazzite, using the version specific for the graphics card hardware fpr each individual machine. To be clear, this means that he installed the Bazzite version for (legacy) nVidia as appropriate.
Each bazzite install was fresh, no copying installs or swapping around a drive with it pre-installed. After install, it was updated using system update and rebooted, repeated until no updates remained.
Screenshots of some of Dankpods's comments to this effect:


There are many comments under the youtube video pointing out that in many of the Linux runs, it was not actually using the correct driver, comments about the experience using other distros, and comments about various potential fixes and workarounds.
This misses the point. Dankpods intentionally tested this way, and used Bazzite, to try and show what this would be like for the average gamer schmuck without a ton of technical skill interested in switching to Linux. Out of box experience matters in this situation, even though it's not quite fair to compare that between free opens source distros and an OS created by a megacorp. To the average end user, it won't matter. They just want it to work.
Prepare to be upset. With this particular testing methodology, Linux doesn't really win overall.
I'm interested to hear the community's thoughts on this.
It is an issue that lasted a week at most. It actually was such a non issue that it wasn't even picked up as a bug report. Dude just had the absolute worst timing in the world. If he had waited a couple days or updated the systems again then, he wouldn't have even noticed.
This is the worst case escenario being amplified and showcase as the typical OOB experience. There's a reason benchmarks are such a niche in content creation, specially when the audience knows way more than the creator about the subject matter. When people like nexus exist, it is a risky business.
I get that he was going for his typical silly and goofy vibe, but he missed the mark. Shouldn't have tried to showcase this results at all. It's like saying to showcase the out of the box experience of a new car and getting hung up that the car ran out of fuel on the highway. Like, fueling is the bare minimum a car requires out of the dealership. Drivers check and install is the bare minimum every gaming computer requires on a fresh install. Not even windows can do gaming without installing proprietary drivers first. It is disingenuous. I love this bloke but he should stick to pouring extraneous liquids into oil pans in cars, he completely misread the benchmark audience.