Burek on 14 June 2014
Most likely by the end of September. There are quite a few games coming out that will increase the gap, as they will sell better on PS4. And XOne doesn't have a system seller until November.
August: TLoU and Diablo
September: Destiny, FIFA (there it doubles around Sept. 30)
October: GTA, Battlefield
November: LBP3, Far Cry 4
The only way Forza or Sunset can sell systems is if they are bundled for free. Halo will probably win November for X1. And return the ratio to below 2:1.
