Japan better hop on the Wii U train for Nintendo sake.
The whole system looks to be practically designed for Japan.
Nintendo gimped the hardware to make sure it has a small casing and probably spent the majority of their R&D dollars getting PS3/360 level power into a 30-35 watt power cap.
Again electricity costs are a big deal in Japan with the earthquake a few years and the nuclear power issue and all that.
The controller/off TV play stuff again tailored for the Japanese market where most households only have one main TV.