small44 on 13 December 2012
I think every assasin creed creted to xbox360 and ps3 will also be in psvita.
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