Don't get me wrong, U2 looks really good but I don't see the characters like almost real life characters , whereas, Heavy Rain characters look so real sometimes it's freaky and objects and everthing in HR are so detailed.. Anyone else agrees with me?

Just because it's made for the realism, doesn't mean it looks better than other games. Modern warfare 2 is supposed to have realistic graphics, but IMO LBP looks better overall.

once you get into game, and forget about blemishes like some low res stuff in background and some stiff animation. it all appears amazing and lifelike

Yeah the graphics in Heavy Rain is so realistic especially the characters in the game
until i can feel an uncanny valley effect just by playing the game. Its mindblowing xD

Different artistic direction...

MFW2 looks horrible.. not a good comparison

i agree Uncharted 2's scores are making people blind and just call it "Best graphics evah!" its not detailed like HR , but its understandable knowing the scale of Uncharted.
but to each their own liking , i'd personally like the more fantasy graphics than realistic ones. just so they don't limit the imagination of the artist

Alright I'll use crysis. Crysis is made for it's realistic graphics, but I think prince of persia (2008) and okami look better overall.

Uncharted 2 is better!!! There is simply no comparison... though I should probably play through Heavy Rain before coming to a conclusion

I think the word you're looking for is art. Heavy Rain is far more realistic and is probably the most realistic looking game I have played, but I think in Uncharted 2 the characters look more "Alive". I think Uncharted 2 has better physics and animation but it has a very stylized look to it. Heavy Rain is far more realistic in appearance, but I think the character models are clunkier and the animation is more "stiff" or robotic.