Why should i care about Killzone 2?

I don't understand why everyone cares so much about a game that is a sequel to a less than stellar game.

It almost seems as if people are just excited because the game looks pretty and that apparently is supposed to mean something.

Maybe my mind will be changed when i play it but i just dont get all the hype and such when we have games like Uncharted 2,God of War III and iNfamous coming out on the PS3 This year.