I Remember frank o Conner said it sold not shipped 5 million copies last year. So either digital is higher that's expected or its undertracked.
edit
i double checked he said it did 5 million by the end of January. Vgchartz had it at 3.85 million at the time. So it was either undertacked or digital was very high for it. Considering it's first month NPd I'd say it was digital more than undertracked. Again this is going off of franks comments but seeing as he is franchise director at 343 I'd trust his numbers a lot more than the numbers here.
Halo MCC will sell 5+ million copies(including digital)
halo 5 will sell 10 million copies(including digital)
x1 will pass ps4 in USA, and UK.







