Wii U :
3/4 of Destiny sales will be on PS4.
Hyrule Warriors will bring a big push for the U in the west.
The baseline will grow whil X1's will still be temporarily from the Destiny release. After Halo is where the baseline should roughly stay the same until further increase.
Also.....It's the Wii U and Holidays.....Nintendo sells best at Holidays!
- except october will just be the start.