Seriously? Japan isn't even Wii U's strongest territory (NA is). Even PSV is substantially above Wii U in Japan. Wii U isn't doing good there. Only 3DS is and Vita is doing decently. PS3 is already on it's way out and manages to outsell Wii U some weeks there.
PS4 already did 500k+ without any Japanese exclusive (Yakuza is on PS3 too). Metal Gear and Gran Turismo are pretty much what PS4 needs there to get a nice sales bump. Actually, this week Wii U made 9k and PS4 made 30k there. I mean, PS4 outsells it 3:1 without any Japanese oriented game except Yakuza, MGS (that's is more like a demo) and the FF XV demo.
Honestly, it's time to stop thinking Wii U will win or do decent in any region. It's more than 1 year, the competitors are passing it in a few months in the market and it just lost all thirdy-party support. It's simple. Sales-wise, the console is done.








