Is the WII U going to outsell the Xone worldwide at least once in 2015

[Qwark]

Last year the Xone struggled to pass the Wii U but since the holidays it seems to have picked up steam, while the Wii U barely gained from the holiday. So where MS seems to have a pretty permanent boost in the US will it outsell it's competitor each week and maybe even outsell the PS4 a few times or will it fall back to 50k soon.