That makes sense, but I think the real question, or what people really want to know is why PS5 over XsX? Additionally. can the XsX run it as well as PS5 (if it needs scaling down, by how much, etc). We understand what benefits the PS5's architecture have over a standard gaming PC but I think what a lot of us want to know is how the XsX's architecture compares to PS5’s, not just on paper, but in practice, which a demo comparison would shine some light on (if we ever see it running on XsX).
You have seen a demo already, spiderman vs state of decay speed of loading last gen games that take up 5GB of RAM.
That is the only practical comparison we have, for now, and ps5 was under 1 second vs over 6 seconds. That is more than the raw SSD speed suggest.