Yeah but:
1) You cannot use SF for all textures calls because still have a cost, they mention that here:
https://microsoft.github.io/DirectX-Specs/d3d/SamplerFeedback.html
So is not like you only will have the perfect amount memory only good enough to be better than its last feature (tiled resources)
2) As the most of the people has not a technical background they really believe all the new recent AAA titles in the last couple of years didn't use any
virtual texture technique, so the numbers some fanboys use like "this will duplicate the memory" are not close to the reality because basically
all modern engines use Virtual Texture.
3)As the delta in flops can favor XSX against PS5 in part of the process of rendering in the same way the huge delta in streaming bandwidth of the SSD
and other things like Cache Scrubbers favor the PS5 in the memory side, things like streaming pool can be smaller in PS5 compare to XSX.
if some start give you numbers is 99% a lie because first that person needs both Dev kits and break a couple of NDA in order to get those numbers.
Also I want to talk again the tiled resources, check video and tell me this video doesn't sound so good that you can think wow this technology will make
Xbox one destroy PS4 but we know what happen later.