Which is gonna to sell more in Japan this summer, Wii U or PS4?

[Dr.Vita]

Wii U got a decent boost from Splatoon. Nothing more. Wii U will drop soon because it has no big games in the summer anymore. PS4 will get Metal Gear Solid V, which will boost PS4 a lot and PS4 has some smaller games all the summer. PS4 is the winner imo.