I'd say they're about on par with each other. Uncharted tops Killzone in polygonal and textural detail, plus there's just so much stuff in every scene (plants, rocks, drain pipes, etc.). It also has better player animations, shown off especially well through melee combat. Killzone 2 has better hit detection and ragdoll animations and much better particle/atmospheric effects (just look at the trash floating around in Salamun Market, or the embers in Phyrrus Rise - and then there's the explosions). Killzone also has semi-destructible terrain, while Uncharted does not.

They have similar lighting models, but Killzone 2's lighting system is given more opportunity to shine throughout the game, given the darker environments, bright muzzle flashes, and uses of other light producing effects such as the Lightning Gun. Hell, even a of Helghast goggles is effective at showing off Killzone's superb lighting system.

It's effective use of lighting and superior particle effects give Killzone 2 a more vivid, realistic graphical presentation, but Uncharted 2 packs more details and probably pushes the ps3's hardware farther than Killzone.

Killzone really has an artstyle that's hard to beat (yaya, brown and gray).  It truly has atmosphere.

Edit: deleted

I agree, but it is almost to close to call...

I also think that they are most overated games ever when it comes to graphics..And Killzone 2 looks better.

this

Both games was beautiful and choice the winner between then is just a personal opinion.

I for example think that best graphics for this gen (until now) is Uncharted 2.

@leo-j, R&C > Uncharted? You can only kidding.

i also belive killzone 2 has better graphics, though uncharted 2 graphics are still amazing.

technogical speaking it's.

but art style uncharted 2 it's better and it have some great trick, like snow and water which are interactive.

lol u need glasses

but guys surely FF13 will look better than both combined!