I don't care if Uncharted 2 is like Uncharted 1 graphically. I was just playing it a minute ago, and even a year later it's still one of the best looking consoles games released thus far. If they only reduce the texture pop-in and screen-tearing, I'll be all over Uncharted 2's graphics.
The main difference I want in the sequal is less shooting and more exploring.