I said it before and I'll say it again: Titanfall did not give the Xbox One a boost.
Everyone likes to think that March NPD showed a month over month increase from February, but March was a 5 week month compared to February's 4. Weekly average, February was higher (Feb 64.5K/week vs. Mar 62.2K/week). In an apples to apples comparison, March sold less than February for XBone based on NPD. And we know the PS4 has been trouncing the XBone in every other country by 2x, 3x, 4x, maybe even 5x as much, from earlier this year and today, all the same. So the Europe numbers are a nonfactor in this comparison (because TF wasn't gonna boost sales that much in Europe, and even if they did, XBone is getting beat so handidly there that it'd be insignificant). The only place where the numbers are close is in America, and even with Titanfall's release, XBone lost.
This should not come as a surprise to anyone.