Yeah but with Thief, both consoles have frame rate issues. With Titanfall, the PS4 isn't in the picture.
The strange thing is that if XB1 is your main focus, why not simply tweak the settings until it will run at 1080p60? That becomes your baseline, and the 360 / PC versions scale accordingly.
It's the same with Thief - why do the next gen versions have frame rate issues? They're going to look better than last gen games anyway, so why push them too hard?
One of the consoles DOES manage it. Similar to the situation 'last' gen.