http://xbox360.ign.com/articles/782/782266p1.html
Software attach rate 5.7 is totally awesome,developer would like it.
Microsft reps went on to boast of the console's attach rate, with on average 5.7 games sold per console for the month of March. Microsoft was quick to attribute these sales to several of its top-selling titles, namely Def Jam: Icon, Guitar Hero II, Major League Baseball 2K7, and Tom Clancy's Ghost Recon Advanced Warfighter 2.
Microsoft seemed particularly giddy regarding the success of the Xbox 360 version of Guitar Hero II, which sold a whopping 291,000 units after only five days on store shelves. The company is quite clearly reveling in stealing a major exclusive from Sony, stating, "Games like Guitar Hero II that were once PlayStation exclusives are now enabling consumers to have more choices when it comes to platform selection, while also broadening our portfolio of games that appeal to customers of all ages."
Software attach rate 5.7 is totally awesome,developer would like it.