Killzone is a FPS. Yes, i will have better graphics but the story will not be comparable to MGS4,
The characters... you simply can't compare Snake or Ocelot with any FPS character (they have a loong story, not only in the game but in the saga, and its pretty complex).
The gameplay... it depends, if you like FPS games, you'll say killzone 2 is better. I prefer MGS4 gameplay. The infiltration, the nerves of being half camouflated on the floor while 2 soldiers walk around you, knowing that one movement, one sound and you'll be death (sometimes you are in their way, so they step on you and "WTF? Shoot him!!! other times they smell you if you are smoking to relax, the folow your steps...). An FPS is more like "It moves, you shoot at him", yes, there things like taking cover, using the weapons efficiently but... pleaso, don't compare that with the tactic needed to infiltrate a biulding with 20 soldiers and cameras without being seen.... And MGS4 also has action...
The online. MGS4 has metal gear online, I think its quite good, but killzone 2 will probably beat MGO on online...
So killzone beats MGS4 on graphics and online... the others categories are subjective (well, history and charcters are not)
