So how much does releasing a console first in a generation relate to sales?

[KeptoKnight]

These software sales are neck to neck which is interesting:

Xbox 360 Call of Duty: Modern Warfare 3 -- 13.72
Call of Duty: Modern Warfare 2 ----------------13.25
Call of Duty: Black Ops---------------------------  12.72

PS3 Call of Duty: Modern Warfare 3----------- 11.51
Call of Duty: Modern Warfare 2 ----------------11.26
Call of Duty: Black Ops---------------------------- 9.85

EDIT: I wonder what are the total software sales to date between both of them.