MikeB on 27 January 2011
@ The Source
You expected Microsoft to have shipped 7.5 million XBox 360s. It was actually 6.3 million, that's 1.2 million you're off.
If the PS3 is the only platform you undertracked it's possible Sony sold more PS3s last quarter than Microsoft sold 360s (It sold more than that last year). Hopefully for VGChartz that's not the case.
