DLSS 4.5 vs FSR 4 and Intel XESS 2 in The Witcher 3 Remastered- the gap is bigger than expected.
Judging by the linked tests, DLSS 4.5 Performance can look better than FSR 4 Quality.
With these kinds of tests - tests that contain a movable image slider between both versions - it's easy to see how impressive DLSS 4.5 can be compared to technologies like FSR 4 and Intel XESS 2.
Implementation matters obviously, but in my opinion - atleast in The Witcher 3 - DLSS 4.5 looks like it's five years ahead and it's the only technology I'd actually use without feeling like I miss out on something. The other two simply soap up the image quality too much.