Cant be bothered to go through the video, but on RDR2, with video at 4k res.
At start native the branches have gaps, that happens when AA is trash and/or low res. Both DLSS variants solve this but I think 3.8 looks better than 4.
As he was riding I kept eye on branches and the telegraph lines, Native has same issue where the lines have gaps and dont fully render, likely due to poor quality AA, and both DLSS handle it much better, 3.8 seems to still have the edge, but 4 was still better than native.
TAA is trash, I wonder how much of DLSS goodness is due to native often being tied with TAA.