As someone who doesn't have a PS4 or Xbone and would probably need a GPU upgrade to run it on PC, I've still gotta say that given the 2017 release date, they're probably better off not porting to PS3 and 360. By 2017 very few games will be releasing on these systems, not to mention that they'd have to rebuild the game in Unreal 3 to do it I think. It'd probably cost them more than they'd stand to make on the platforms.