Cyrus on 08 July 2014
My guess:
PS4: 50
Vita: 15
WiiU: 55
3DS: 70
My numbers are based on the follwing guesses:
PS4: Release hype + good sales for the first 3 years. Then interest could fall rapidly, since it doesn't offer much value compared to a slightly higher priced PC that offers a lot more.
Vita: Already at it's peak, so i guess it won't do much more if there's not some very attractive PS4 Vita combination.
WiiU: Didn't sell good during the first 1.5 years, now slowly picking up sales numbers. It will not have huge numbers as PS4 during the first 2 years, but will continue to sell on an okish level for a much longer time.
3DS: It's close to reaching its peak, so somewhat like current sales*1.5.
