R2, COD waw, or MK vs DC?

I want to get one more game before christmas, and i want something violent... So i have seen gameplay on all three, and i know mk isnt a shooter, but i like mk games. I really liked cod4 (mostly online), but i hear resistance has awesome online.So which game would you choose?

- i like good online

- i like multiplayer ( friend can come over and play)

- i dont play much campaign

THANKS

COD:WaW by far. R2 servers stink. MKvDC just doesnt seem worthy of 60 bucks.

PSN:Zizaner

Resistance 2 is the best multiplayer game!MateusCarvalho