I cant see it being that high. What it really depends on is what extras GTAV is going to ship with. If its just the same thing with no storyline changes or different missions or included DLC not yet released I can see it selling perhaps 2-3 million across both systems. If it does ship with the storyline expanded, included single player DLC and a host of other extras it could be 4 million plus.
PREDICTIONS FOR END OF 2015: (Made Jan 1st 2015)
PS4 - 34M - XB1 - 21m - WII U -12M







