Can Halo 5: Guardians Hit 12Mil Lifetime in Sales? (or At Least 10mi!?)

[Barozi]

When Halo 3 came out, the 360 userbase was 12m.
When Halo 5 releases, X1 will be at 14m minimum.

Halo 3 reached 10m on 360 when the userbase was 32m
X1 will definitely make it to 32m.

So I think 10m is certainly possible.