Recoil of a weapon in a 3D virtual environment is a technical feature. It's not part of any other development. The trailer is comparing how the weapons feel in the game.
Also I never said the 360 couldn't handle recoil in a game.
He brought up the lighting differences in the games. Killzone 2 has better dynamic lighting. It doesn't matter how you look at light. If it's bright, it's bright. Since he was comparing the sunlight in these 2 games then in broad daylight (as was shown and compared) it's going to be bright. Because it's the sun.
As I stated though. This trailer can't give a proper comparison on the games' graphics, since it not a very well made trailer.
Also try to keep in mind that the Killzone 2 footage is of the demo. Not the final release build. Like Gears of War 2.