While not going into exact specifics at the BMO Capital Markets Digital Entertainment Conference in New York, Activision's Dennis Durkin, Chief Operating Officer of Interactive Entertainment Business, told those in attendance that the total sales of Modern Warfare 2 on the Xbox 360 have been double that of the PlayStation 3 version.

"Initial feedback from retailers is that Call of Duty: Modern Warfare 2 [on Xbox 360] has outsold the PS3 2:1," to put it in his exact words.

He added that on Tuesday, the day of launch for the title, the Xbox LIVE service saw its busiest day ever with over two million users online simultaneously. It is believed that the success of the game has led to Microsoft passing the ten million mark in Europe.