Bowling: Modern Warfare 360 online has 13 million unique users

[Zizzla_Rachet]

Now that is how FPS MP should be played!
Go XBL!

XBL users for CoD4 is just as much as it's cross platform sales!...Granted the number of copies on the Xbox 360 does not equal that much..But still 13Miill people have tried the MP on XBL..Awesome!