TWRoO on 01 September 2008
I like your chart.
The only flaw I could mention is the average being pulled up by the likes of Wii Play etc (similar to Daxter pulling up PSP... I believe Daxter has been bundled at some point though, possibly still now)
That problem is kind of fixed by the 3rd party chart though, although it would be dragged up by Mario&Sonic.
