Prediction :Xbox One will outsell Wii-U by half a million in September.

[Arkaign]

September won't be a great month for XB1. If you said November it would be more plausible (though I still don't think the gap will be that large).

XB1 is a long shot to sell 500k globally in September. That's 125k/week, or over 100% more than recent weekly sales.