http://www.totalvideogames.com/PlayStation-3/news/PS3-Sales-To-Overtake-Xbox-360-In-2011-14421.html
Well an article analysing the PS3 and 360 has been attached which sheds more light on the issue. When in 2011 would the PS3 overtake the 360 in worldwide sales is what everyone wants to know? More than likely second half of 2011.