Uncharted 2 not only has better graphics, the gameplay and story is much better than Killzone 2.

And I like Killzone 2 alot too.

Oh no don't exhaust all the options as if there are no others.  They could also spend most of the time working on the graphics to make a game that is very easy to visually advertise.  That's obviously a potential reason for why a developer would create good graphics.  So no Xxain is right that buying games off visuals is not a smart move at all. 

But yes the game visually does look quite good but I'd give the edge to Uncharted 2.  KZ2 looks great in some areas and not so great in some areas.  While Uncharted 2 is well polished and everything flows quite well.  But you'll enjoy both.

Personally I think the graphics in Killzone 2 are superior but the graphics in Uncharted 2 are more visually appealing

I was personally more impressed with the graphics of Killzone 2

Killzone 2 has more shinyness, more orange glowey eyeballs, the most greys and blacks EVA, and super ZOMG amazing megaflops of POWA! Other than that, it's an ugly game.

Uncharted 2 is so much better on every level except technical superpowaz it ain't even close.

uncharted 2 has the edge

Why have you not already buy Uncharted 2! Go go go go!

Glad your liking the game and I think both KZ2 and U2 have both set the graphical bar for consoles.

Once you play KZ2 online you'll see the best graphics this gen has to offer so far.

I'd say Uncharted 2 has the edge over Killzone 2, except for lighting. But Uncharted 2 is much more enjoyable to play.