I don't think the game is overhyped at all. I think people jumping on the hype bandwagon just for the sake of it may be dissapointed with what they end up recieving though. The key here, is KNOWING what you'll end up with - read the full IGN review if you are unsure of what exactly the game encapsulates.
Also, part of the 'hype' this game is recieving is due to the fact that Uncharted was a MUCH loved game by many, and is probably a fan favourite game despite not being the highest rated game. So expectedly people are jumping for joy when they can see so much has improved since the last game.
Anyway, I respectfully disagree with the OP. The graphics are phenomenal. Nothing on the ps3 matches its artistic and technical beauty. Even mentioning batman aa in the same breadth as uncharted 2 is laughable.







