sweetoothj on 17 August 2014
I think this will only happen if three things occur. A Halo number title releases (Halo 5 is suppose to release in 2015), price drop (very likely) and if major third party developers stop making games for 360/ps3 (possible for certain games). Anyways, I have no doubt that xbox one will outsell WII U world wide by the end of 2015. (All major third party titles with the best exclusives going to for it in 2015 and a price drop more than likely).
