I'd say your score is a smidgen low - 9.4 to 9.6 seems right bracket for Uncharted 2 - and some of your reasons aren't valid criticims really, particularly the following 2:
Body count? Every game with gunplay has a ridiculous body count. I think it just feels more in Uncharted titles as Drake seems so much more average - when you're in a war setting like COD or SF like Halo you don't notice. To put it another way, in a shooter, imagine the length of the game if there were only 100 bad guys. Heck, one major spree of bad driving, explosives, etc. in GTA IV and you could probably go way past the amount of bad games dropped in Uncharted, and in that title you'd be mowing down innocent folks!
Length - Uncharted 2 has by far and away one of the longest and most varied SP campaigns recently, much meatier than Halo, GoW, Mirror's Edge, etc titles. Plus it has an exceptionally good coop and MP component. There is nothing, looking to market for comparison, to find fault with regarding length. You actually contradict yourself regarding how varied locales are etc. then state it is too short. I know what you mean it is so good it seems short and you wish it were longer, but that shouldn't translate to any score dropping as you need to compare to market and actual content.
I'd agree stealth is weak but its really only an added gimmick, only really central to plot in one early mission. In reality, compared to its peers, you can only nitpick Uncharted 2, and that means a lot less than 0.8 of flaws to me.
I'd say you captured what is good about the title from your summary, but are over exaggerating a little the flaws in relation to the actual game - for example if stealth was a constant and necessary mechanic I'd agree with your view of its impact, but when it's only for one level and your own amusement after that, it's significance is minimal to the overall game.
Try to be reasonable... its easier than you think...
