Youre not realistic, just pessimistic supporting Wii U over Vita.
Vita has big games coming and many famous games, and soon, especially in Japan, with the price cut, the sales will be good for these 3 month when Wii U will have to wait, selling 30k each month till the end of the year for Mario. ( the only game we know for this year which could sells unit and make it outsell the Vita, and maybe Pikmin but Pikmin isnt really famous, the sales decreased since the first )
Predictions for end of 2014 HW sales:
PS4: 17m XB1: 10m WiiU: 10m Vita: 10m







