Titanfall will sell well, it'll boost X1 sales for a couple of weeks but that's it. It's going to be very front loaded, in my opinion, but it will not sell more than Killzone. After March and heck during March the PS4 will continue to steam roll to the X1 which means KZ will continue selling, Titanfall will flatline until an actual X1 price cut boosts sales. In fact, I'll go as far as to say that WW, inFamous will outsell the X1 version of Titanfall
People need to temper their expectations and look to past "system sellers" like MGS4 and Halo to see what Titanfall might do (I honestly don't get where some get their absurd expectations for TF)







