for me, it sounds that it depends on developer and the tools. lets look at Death Stranding, and look at Fallout 76. both has the same power. while if you see the Fallout 76 and Death stranding in comparison, you would think that Death Stranding running on next gen machine, no? of course Yes. so for me, it is strong possibility that for some developers PS5 and Xbox feels like 12tf machine, for other like 9,5tf. so that is why the information is different.
but if Osiris saying that it is locked 4k + 60fps + RT with "room left", that's sounds like 12tf machine.