The problem isn't with the PS5 Pro, but with the developer not taking advantage of the Pro.
And we have several examples of games where the PS5 Pro had a good implementation PSSR, and compared to the PS5, the image quality has been greatly improved.
examples with pssr
Space marine 2
Final fantasy 7 R
Ratchet & Clank: Rift Apart:
Demon's Souls
Stellar Blade
The last of us part 2
The last of us part 1
The First Descendant
The Crew Motorfest
Battlefield 6 open beta
difference from a company that gets the most out of the console... Battlefield 6 open beta runs up to 30% better fps on PS5 Pro vs PS5 in performance mode, while also having "substantially better" image quality using PSSR and higher average resolution too.
PS5 VS PRO (PSSR)