I personally am yet to notice the lag people complain about. I reduced my sensitivity (even in cod4 as well) becuase I usually move my character to aim instead of just moving the sights so I haven't really had a problem.
However, you'd be better served to complain on the official PS forums or killzone.com because the devs actually read those. They just might patch it for you guys with problems if you make enough noise. It probably won't make much difference for me though because of my play style and others who've adjusted to the system might be complaining that they're not as good as they were before so the devs really have to weigh the pros and cons of the patch.
However, remember that no matter how bad you think the controls are, in MP, it's the same for everyone so if someone else got the kill, he was just better than you (except you were lagging lol)
"Dr. Tenma, according to you, lives are equal. That's why I live today. But you must have realised it by now...the only thing people are equal in is death"---Johann Liebert (MONSTER)
"WAR is a racket. It always has been.
It is possibly the oldest, easily the most profitable, surely the most vicious. It is the only one international in scope. It is the only one in which the profits are reckoned in dollars and the losses in lives"---Maj. Gen. Smedley Butler
