I don't think 50$ is a small price cut for a handheld and Personna 4 sold well despite the low user base so i don't see why other titles do the same thing.
I think Xbox360 not help PS3 but the oposite Xbox360 had nearly the same games and is less expensives so Sony was forced to do price cut every time Xbox360 do es a price cut.
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







