God of War sells 3.1m Copies in 3 Days, Fastest Selling PS4 Exclusive.

[Kerotan]

Halo 3 did 3.3m in first 12 days.
Gow 3.1m in 3 days only

I read that on resetera. Someone was asking earlier how these sales compare and there's your answer. God of war is now the bigger series. If you got by halo 5 numbers it's about 3 times bigger. Some difference a gen makes.