I finished this last night.
Total rollercoaster of awesomeness
Not sure if I'd give it a 10, but it's certainly at least a 9 IMO.
I didn't get frustrated (unlike Batman AC), didn't feel any deaths were cheap, and didn't quit in a rage (unlike Batman AC). The boss fight was much better than Uncharted 1's QTE boss and Uncharted 2's PITA boss. Actually, the only times I can think of in this series when I've been seriously frustrated have been on Uncharted 2: the guy on the train you can't just shoot, and Lazarovic at the end.
My only niggles are story & character related: