That is a difficult question due to them both being different games.
If you enjoy racing games Dirt 3 is quite fun - it looks good and plays good. An overall enjoyable experience.
If you enjoy FPS's Black Ops is enjoyable. The campaign is quite short but the Zombies mode and Multiplayer make up for that.
I can't answer which ones better that is up to which genre you prefer: FPS or Racing
yes black ops is better
Black ops is a lot better than MW3
No, black ops is way better
yes
No!!
In my opinion black ops is better because I like the guns better
No black ops I alot funner that's what I think
not in a million years
Black ops is way better...Soccer is dumb and boring all you do is kick a ball
NEVER
no
yes