The thing with Vita VS WiiU is that Vita's sales are more stable thanks to its support in Japan. WiiU sales tend to decline a lot during its droughts, but when there's a big release, the console sells a decent amount of units. WiiU has more system sellers than the Vita, but Vita has more games and a better release schedule. WiiU will outsell the Vita if Nintendo makes enough system sellers before the NX releases. After the NX, the traditional long lifespam of the PS brand will benefit a lot to the Vita, specially since Sony doesn't look like it's going to make another handheld.