Lol, funny thread, look at my predictions, it will answer to your insanity.
There will be no drop compared to 2013, it's even the opposite if you think a bit, Vita will obviously sell much better this year in Japan, and there is absolutely no reason to think vita will drop in US or europe, again it's the opposite in europe thanks to the PS4( and we all know why Vita sold more in 2012, helped by COD + launch year numbers, so the drop in 2013 is logic but there is absolutely no reason to think it will drop in 2014, but much more reason to think the opposite )
Predictions for end of 2014 HW sales:
PS4: 17m XB1: 10m WiiU: 10m Vita: 10m