from my readings i have found Black ops to be more unannounced so my answer would be Black ops google it if u need to
No there are more people that play Black Ops
Black Ops. It's more realistic and if one had the choice for one, Black Ops is the better choice (in my opinion).
Black Ops, by a clear mile. Black ops is the most sold game ever.
you unlock more emblems
It's better on both of them than the Wii or DS otherwise your system set up is more important than console choice
They are both contain strong violence but Black Ops would surpass it due to some of the torture and deaths in the campaign. There is also more blood in Black Ops then Modern Warfare 2.
All you have to do is complete more achieve more achievements and Co-Ops
they are not officially considered special ops but they are more special ops than regular infantry. They might as well be special ops. i have a friend that is going into 10th mountain so i know.