Well ,this would be a typical case of shipped vs sold.....if Sony hadnt explicitly said it was sold to consumers .
http://www.playfrance.com/news-infos-4-5-millions-de-playstation-3-vendues-dans-le-monde-325657.html
After all its only a 300K worlwide discrepancy and the PAL numbers have some adjustement to be made (194K in Spain instead of 140K etc )
By the way ,Sony ,in addition to their internal data ,have all the information of NPD ,Media Create ,GFK ,Gamecharts etc ....its their business after all .
I personally think the number must be around 4 million .....but we dont know how it is selling the thing in markets as Rusia ,Corea ,India ,etc ....maybe that and some tuning of the PAL numbers can explain a 200K worldwide difference..







