On Amazon US XB1 looks to be selling about 2 times more than Wii U. Wii U is still slowly dropping in ranks so it hasn't yet found a baseline.
In Europe the XB1 seems ahead except in France. In the UK which is the biggest market the XB1 looks like selling at least 4 or 5 times more than Wii U. WiiU still pretty dead in UK.
Amazon UK
#34 XB1 + Destiny
#61 XB1 + FIFA
#89 XB1 + Titanfall + Ass Creed
#178 XB1 + Kinect
#204 XB1 + Titanfall
#352 WiiU + MK8
Amazon Germany
#21 XB1 SKU
#123 Wii U + MK8
Amazon France
#31 WiiU + MK8
#178 WiiU + SMBU
#191 WiiU + Zelda
#200 XB1 + FIFA
#201 XB1 SKU
#230 XB1 + Kinect
#334 XB1 + Forza
Amazon Spain
#162 XB1 + Destiny
#239 WiiU + Party
#560 WiiU + MK8
I think Wii U is already selling a bit less than XB1 again, and the gap will be pretty big during the holidays.
