“Certain” AAA IP Needs 10 Million Copies to Break Even says

[foodfather]

Its Watch Dogs. 10 Mil is possible, if Ubisoft don't mind waiting a couple of years for next gen sales.

3.5m - 360
3.0m- PS3
0.5m - PC
2.5m - PS4
2.0m - XBO

I doub't he's talkign about Destiny, because that could easily reach 15 mil, half of that would probably be on 360 alone.