If i put the same game in 30fps and 60fps side by side i can see a difference.but if i only have a game in 30fps or 60 pfs i wouldn't know if it's 30fps or 60fps
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