sure there is no way of telling if Xbox 360 is not able to do those games.. but there is no way of telling if it can either..

I think that we will never see something like KZ2, GOW3 or Heavy Rain on another console this gen.

Enriching gameplay MGS4
superb effects Uncharted 2

Lastly the king of lags KZ2

Uncharted 2 (Amazing visuals and animations with brilliant physics and set pieces not seen before)
Killzone 2 (Good use of rendering techniques that take advantage of PS3 architecture + very good A.I)
Heavenly Sword (sheer number of units and the AI being cleverly optimised for the Cell processor)

Honourable mentions: Metal Gear Solid 4 (full use of blu ray) and God of War III

All this talk just proves SONYs 1st & 2nd party are insainly brillient!

Flower (showing a good use of six-axis controls as well as being the most beautiful downloadable title I've played)

Demon's Souls (mostly to showcase how the increased online functionality of this gen's consoles allow for new ideas and cool implementations of online systems that meld single player and multiplayer into one seemlessly)

Uncharted 2 (Best graphics I've seen on a console thus far as far as the full package goes, also showcases that a game that has amazing graphics doesn't have to suffer in other aspects)

I would pick Uncharted 2, GOW3, and for the third one, something very different, like Flower, to show more different stuff

I did, hence why I said "full package" since God of War 3 definitely has the best looking single character (Kratos) but the rest of the game is not as good looking as Uncharted 2 and has obvious blemishes where as U2 had none that I noticed.

Dude....I know it is rare for me to talk about graphics, but GOW3 had way better graphical models than U2. The enemies graphics were brilliant all the way down to Zeus.

The first Uncharted, for its time spoke volumes, same with Ratchet & Clank ToD. That's 1 full year after the PS3 launched, a little late indeed, but not much when you consider the 360 only had Gears (as exclusive) and then had to wait for Gears 2 to get more of the same (no, Mass Effect and Halo 3 are not technically impressive).

Right now there are 3 games that are untoachable : MGS4 (2008) , Uncharted 2 (2009), God of War 3 (2010).

VERY Strong runner-ups:  Killzone 2, Heavy Rain, Gran Turismo 5 Prologue (yes, it still amazes more than any other racer, technically).

I wish to add, none of those games are quite possible on multiple discs, perphas you could do it for MGS4 ("maybe"***?)... the others are just impossible.

Agreed, GOW III has the best graphics. Uncharted 2 is close, tho. The thing is with Uncharted 2 is it has lush jungle themes and over colourful ones, too, which gives it a "first impression" best graphics of the two. But, GOW III has better textures. Both the ferkin' games are amazing!