reverie on 06 April 2007
This (http://vgchartz.com/worldcons.php) page is called Worldwide Hardware Shipments.
And this (http://www.scei.co.jp/corporate/data/bizdatapsp_e.html) page from Sony states Cumulative Production Shipments, with is even less then "shipped".
Hardcore gaming is a bubble economy blown up by Microsoft's $7 $6 billion losses.