Really the only difference I've heard about is the 4k capabilities. I was talking to a guy at gamestop because I was thinking of doing a trade in for my old xbone for the S, but he convinced that it was not worth it for the minute improvement in performance if you didn't have a 4k television to...
I don't remember where I heard it, but I remember watching a video where someone pointed out they never bought nintendo for specs, they bought it for the fun games.