User blog comment:Bovell/Rumor: Battlefield 3 outselling Modern Warfare 3 at GameStop/@comment-189.222.29.59-20110630214733

You may already know that in response to this, or seems like a response, Activision is running a Call of Duty Convention similar to BlizzCon

http://www.planetxbox360.com/article_15134/Activision_Announces_Call_of_Duty_XP_2011_Fan_Event