Well according to VGcharts it's
WiiU: 0.07
PS3: 0.06
360: 0.05
With 0.19 as the WW combined total. So close!
I think either the WiiU or PS3 will win in the end. We'll never know though, because we don't collect digital data so I think we may have to wait for an announcement from Ubisoft.
Edit: Of course I'm refering to lifetime, it's clearly sold more on the WiiU FW.







