Honestly, why is Killzone 2 so highly hyped?

[Coglestop]

clerk said:
I have no idea either. I think it's because of the prerendered trailer they first showed, where they lied to people and said it was ingame. First one was absolute crap, so why this would suddenly be great, I have no idea

 While franchises going from medocre to genre-defining doesn't happen often, it DOES happen.  Biggest example I can think of is Street Fighter and its follow up Street Fighter II.

I do feel that Killzone 2 is overhyped, though.  Not quite Halo levels of hype, but close.