Black Ops 2:
360 - 4.53m
PS3 - 2.87m
"The current split between the Xbox 360 and PlayStation 3 mirrors exactly the split between the two versions for the original Black Ops. In November 2010, the Xbox 360 version sold 4.9 million units in its launch month, while the PlayStation 3 version sold 3.1 million. In both cases, the sequel has seen a modest decline two years later."
though 4.5m and 2.9m should be good enough







