According to Games Industry International, a “market analysis” document by Lewis Ward of IDC (the International Data Corporation) called the Worldwide Video Game Entertainment Console Hardware and Packaged Software 2012-2016 Forecast showed a prediction of hardware as well as software sales over the coming quadrennium. As for December, 2012, it is said that “Sony’s PS3 managed to surpass the number of Xbox 360s shipped worldwide (about 77 million vs. 76 million), despite the PS3 launching a year later.”
http://www.ubergizmo.com/2013/01/ps3-overtakes-xbox-360-in-global-sales-figures/
http://ca.ign.com/articles/2013/01/10/report-ps3-surpasses-xbox-360s-worldwide-shipped-total
http://www.psxextreme.com/ps3-news/13174.html
http://www.gameinformer.com/b/news/...ation-3-worldwide-sales-eclipse-xbox-360.aspx
http://www.ubergizmo.com/2013/01/ps3-overtakes-xbox-360-in-global-sales-figures/
http://ca.ign.com/articles/2013/01/10/report-ps3-surpasses-xbox-360s-worldwide-shipped-total
http://www.psxextreme.com/ps3-news/13174.html
http://www.gameinformer.com/b/news/...ation-3-worldwide-sales-eclipse-xbox-360.aspx