@Skeeuk: They're "neat", I already said the environments look better than those in Gears of War 2. The characters look worse though (as I said, too few polygons), which makes me think both developers are doing trade-offs on technically similar games.
This is the screenshot where the polygon issue is most visible:
http://ps3media.ign.com/ps3/image/article/890/890010/killzone-2-20080715040131304.jpg
Open it at full size, look at the helmets and legs.
My Mario Kart Wii friend code: 2707-1866-0957







