In your opinion, if items are corrected even being an unsupported game, is DLSS better in this instance?
That seems to be a factor of why most are glossing over this. It's like they are arguing even if said issues were corrected DLSS is still going to win so why bother.
In my mind, even though I hate upscaling for high end. I think this is a disservice to gamers who use these features. It's shoddy work, no matter who's "better".
I hope they will do a new video on games that actually use and support both. This kind of stuff makes you think someone being paid to do this type of reviews.
Take a look at what mods can do to the game below. This, IMO, is the real winner. The removal of TAA and DoF. Although I would prefer a more grainual control of TAA.
Those who think DLSS is better will say that even if they compare it with native. You are not going to get an objective opinion from cheer-leading, shilled, fanboys who only see the world through a green lenses pair of glasses.
The problems is that they are not discussing the flaws shown with DLSS. The blurriness, the IQ imperfections when you zoom in, etc. The truth is both are upscalers. And they are designed for those who don't have mid to high end video cards. In this case GoW only needs 60 FPS. Anything more will not make the game smoother or faster. Having played it myself and getting well over 100 FPS I found no need to use FSR 2.0.
But to answer your question in a different light Jetpack Interactive should have left FSR 1.0 in place. Why they removed it may be of a technical challenge since they jerry rigged FSR 2.0. As there is really no other reason I can think of why they removed it. But you are right, they rushed it and it's a really crappy inclusion.
Therefore, not only do we need the items corrected. But have them use AMD GPU. And, the option to disable/reduce TAA and DoF. As most of what DF found is in direct connection to TAA/DoF IMO.
Upscalers are a simple tool for those who want to enjoy a game without the need to upgrade in the short term. It's a great tool for that. But IMO, not much else can be gained from it. Therefore, anyone saying that DLSS is better is in my opinion an obvious bot-shill trying to hype up a gpu feature so that you can view it favorably.
Below are some pics

Original

TAA/Sharpening/DOF OFF