MW2 with more perks.
I did notice that the graphics in Black Ops were a little different from that of MW2 and I actually thought they were better. The maps have more variety but the trigger aim is a little more difficult to get used to. The perks are better because now I'm able to design my player sooner and faster rather than waiting to unlock the perks in later levels. Still, I have to wait to open up weapons.
The killstreaks are different and have more of the feel I'd get had I played the game during the Cold War. There are some things that are a little more difficult, such as melee attacks. I have to be a lot closer to my enemy to slice and dice.
The overall game plays just like MW2. The upgrades and new maps are entertaining and the zombie killing adds on to the game as well. I think if you like Call of Duty MW and MW2, you will definitely enjoy this one.