Il think it will be PS4/PC for FF VII R since X1 is irrelevant for japanese games now ( square enix understood it after thé big failure of type 0 on One )
And i guess if they wanted to released FF VII R on One, they would released thé port first, but they wont
Predictions for end of 2014 HW sales:
PS4: 17m XB1: 10m WiiU: 10m Vita: 10m