Your numbers are crap. Yes, the Wii outsold basically everything, it was a huge hit. It was also TEN YEARS AGO. Yes the DS/3DS sell great, no doubt. But in the current home console space Nintendo are failing spectacularly.
According to Nintendo themselves, the Wii U has sold 13.4 million units worldwide. Sony and Microsoft don't publish hard numbers, but most estimates have the Xbox One at around 25 million and PS4 at around 49 million. Or a total "not Nintendo" of 74 million. This is despite the Wii U launching a full year earlier than the Xbox One and PS4.