Also remember this is from a dev kit, with first version of PSSR.
Apparently Insomniac told DF that the PSSR already had updates and improved it significantly, like improving ghosting and reducing runtime and they expects more improvements over time.
So just like there are DLSS versions,.... a few months down the line from the PS5pro launch, you might see a update, and a PSSR 1.1 or something, that then improves things abit.
I'm just so impressed.
I wish AMD had this for their PC side of things.