I finished U1 and thought it was a ok game. I personally give it a 7/10, would have been a 8/10 if it wasn't for that ridiculous jetski part going up river.
And I just now finished Uncharted 2. While it was an ok game too, I don't see where it deserves more than a 8/10. A 9/10 or 10/10 score seems way to much for U2. Puzzles are easy to figure out since the answers are all in your journal, platforming/climbing can be irritating at times. But shooting and story humor was good.
I'm going to try to replay U3 again (last time I tried playing it I was bored out of my mind)
But overall, these games seem average. There are better third person shooters out there. Just wondering what people see in these games.
(And obviously, this is just my opinion)