I don't think this image quality will be as notable, but the PS5 boost was actually quite notable for more than 10 games.
Monster Hunter World runs at 60FPS locked on PS5 at resolution mode and it didn't have an update for example.
It wasn't the Xbox stuff where they did work on the backend, but it impacted many games nonetheless and in some instances, like MHW, produced better results than Xbox.
that wasn't because of a system-level feature, though, that was just monster hunter running better on PS5 because it had an unlocked framerate in the first place.