Looking at the total sales of the PlayStation 4, Xbox One, and Wii U in December 2016 shows how the PlayStation 4 has continued to dominate over the Xbox One and Wii U, outselling both of them combined by 12.04 million units. The Xbox One in turn continues to increase its lead over the Wii U and has now sold twice as many units.
The PlayStation 4 passed the 53 million mark and the Xbox One passed the 27 million mark. The PS4 has sold 53.80 million units lifetime, the Xbox One 27.95 million units, and the Wii U 13.81 million units.
[Source: vgchartz.com ]