I was playing MW2 online and i m hugly disappointed.I only played a bit of online from MW1 and WOW and for this one i got upto level 10 .

let me start:

first of all the maps are too big for 10 -12 people. (They actually make each weapon different, example Assault Rifles shoot farther than SMG.)

graphics online is like a polished PS2 game(SP is beautiful but online ,,,ughhh)everything is low res it's like rainbow six vegas graphics . (There ok but graphics are not everything huh)

the minute you step out your dead from an unkown place. (fuck yeah)

it's very fast paced like UT3/R2. (until you camp or get shot by a camper)

Class based multiplayer with different ability is much much more fun. (Ndeed)

the only positive is that the aiming system is extremly forgiving of your error while shooting.(shit no there is a lag, if you shoot me and i move behind a wall you will shot me in the place where i was)

I honestly don't see why this is popular at all.

KZ2 is much more epic and hectic with 32 players in the room.with 10 turret bots,8 air support,etc... (KZ2 is heavy,slow  and it takes a hole clip to kill someone, but then again Gears is the same way)

I give MW2 online a 6.5 and a 9 to KZ2 online.

people that are even comparing the graphics of MW2 and KZ2 either are joking or haven't experienced KZ2 online. (KZ2 shits all over MW2)