As long as Sony is leading in the US, never. Microsoft will just come with insane deals like they did in 2014 as long as they aren't in the lead, and even when they are they'll have some deals. I'm fully expecting a $300 XB1 with Halo 5 (or a game like Tomb Raider) at no additional cost this holiday and possibly $279 at BF. Microsoft is very fortunate that they have the ability to bleed money if necessary.