i am with with you that the sequel in general don't push meny systhem but when it has a big differance between the game and the sequel many new people will buy the game and possiblly buy a new console
PS4 - over 100 millions let's say 120m
Xbox One - 70m
Wii U - 25m
Vita - 15m if it will not get Final Fantasy Kingdoms Heart and Monster Hunter 20m otherwise
3DS - 80m







