But it’s not just 4k is it? The lower power model will surely have worse graphics, as was the case for PS4/PS4 Pro?
It’s hard to say really, and more so it’s probably harder to see.
I suspect they’ll both produce the same level of detail and texture quality and they both run 60fps perfectly well.
The Series X will do it all in 4k, the S is pegged at 1440.
Actual real-world performance will be a different thing, some simpler games I’m sure they’ll look identical, it’ll be the big AAA titles coming a year from now that might make the difference, also whilst the S is pegged to 1440 and 60fps which is more then adequate now… the X can do 120fps and 8K (maybe not at the same time) and it’s got a 4x more powerful GPU to do it.
But at this point you’re well into PC gaming levels of geekdom, can you really tell the difference between 120fs and 60fps when you’re actually playing a game, or just went you’re nerding out and want to see some stats?
TBH, I bought a 4K TV about 2 years ago, it was very wow when I bought it, these days I really can’t see the difference between 4k and HD on most things, it certainly can’t make a bad film good or vice versa and I’m sure games will be the same.