Dead Space overtracked?

[Rainbird]

http://www.gamespot.com/news/6209132.html?om_act=convert&om_clk=picks&tag=picks;title;3

Glen Schofield says Dead Space has sold about 1.4 million copies on PC/PS3/360, whereas VGChartz has Dead Space on the PS360 sitting at 1.39 million copies.

1		Dead Space		Electronic Arts	1,959	8.4	0.79m
2		Dead Space		Electronic Arts	1,220	N/A	0.60m

I don't know how old his figure is, but it can't be too old. And we don't know if he is talking shipped or sold to consumers either...