Looking at the total sales of the PlayStation 4, Xbox One and Wii U in April 2015 shows how the PlayStation 4 has continued to grow its lead over the Xbox One and Wii U.
The PlayStation 4 passed the 22 million mark this month. The PS4 has sold 22.39 million units lifetime, the Xbox One 12.50 million units, and the Wii U 9.65 million units.
PlayStation 4 Total Sales: 22,389,944
Xbox One Total Sales: 12,503,922
Wii U Total Sales: 9,646,187
Full Article: vgchartz.com (http://www.vgchartz.com/article/259249/ps4-vs-xbox-one-vs-wii-u-global-lifetime-salesapril-2015-updateps4-224m-xbox-one-125m-wii-u-96m/)
Holy crap...I didn't know the PS4 had that big of a lead. I thought the Xbox was only 4-5 million behind in sales.
It's a much closer race in USA, a complete blowout everywhere else.
VGChartz is not 100% accurate. They tend to estimate a bunch of stuff on their own. I think they used to ban people at Neogaf for quoting their figures for hardware or games. Not that I am recommending you ban yourself. -1 Karma will suffice. :D