The Wall Street Journal using VGChartz estimates or pure coincidence?

[Nsanity]

The Wall Street Journal

Last week, kids of all ages dropped everything to plug a $150 device called Kinect into their Microsoft Xbox 360 game consoles. Five million sold in the last two months.

http://online.wsj.com/article/SB10001424052970203418804576040103609214400.html

You need to scroll down a few paragraphs.