The truth is I was kind of disappointed with the game. The graphics are great and all, although not THAT much better than COD4 for example. Apart from that though it was hard for me to get used to the the weighted feel of the controls. The story of the game was a let down I think, way to linear and the same stuff repeating itself over and over again.
I enjoyed the story of COD4 a lot more in retrospect. That is not to say that KZ2 is a bad game, far from it. But I think it is behind COD4 in single and multiplayer.
Multiplayer in KZ2 has so many annoyances I put it down after 10 hours and I don't feel like putting it in again, which is the total contrast to COD4, which I couldn't put down and always went back to when finishing another game like Fallout3 or Metal Gear Solid 4.
Just my 2 cents though, your mileage may vary.
Everyone is entitled to their opinion, but I will say that KZ2 looks a lot better than COD4. But again, that's my personal opinion.
And as for the control issue, I'm glad you didn't freak out about it. It seems on other sites that people spend more time talking about games than actually playing them. I will only back something up if the community is worth coming back to. And around 2007 the Killzone community was very welcoming.