Looked at this video too as it was linked in the thread, it's quickly obvious to me the compression significantly muddies the ability to truly discern between the two (given I test this myself regularly on my own 4k120 OLED, including some of the same titles shown here), plus using what is inarguably FSR's best case scenario, 4K Quality mode, we already know that's where the gap is the closest.
I called attention to this in the comments and elaborated on my own findings, how I find his 'challenge' methodology flawed and conclusions drawn interesting but far from definitive given the compression obfuscates much if not all the (admittedly reduced) differences each technique has when viewed in real time rendering on ones own monitor, and detailed how and why DF's methodology for comparisons leads to significantly less flawed comparisons and better conclusions, which happen to be in line with my own and other reputable tech press.
Well my replies got deleted and initial comment hidden from public view, and other comments I saw pointing out the same are gone or hidden too. Methinks this channel doesn't like constructive criticism...
well, just another channel to ignore now I guess, if they're not willing to even respectfully listen to constructive criticism and allow it to be visible, they'd rather block their ears and continue beliving in the ...uh... point? they're attempting to make.