Not sure why you compare Miles to those games. Miles should be compared to Spiderman, and on top of that within it's genre. Spiderman from 2018 was much bigger. If Spiderman was released at the start of the PS4, no way that they would release this a couple of years later as the "successor". It wouldn't have been made or came out a bit smaller as a DLC. Pretty sure Spiderman 2 will also be much bigger than this. Miles was made because they needed to fill the PS5 line up, and they could build on top of what they already had from Spiderman with a new skin, couple of graphical improvements and a different story line.
I'm not saying that's a bad thing, just saying there's no reason to pretend as if Miles Morales was nothing more than a way to fill the line up a bit. I'm also not saying the line up from Xbox was any better btw.