So XB1's weekly average for July was ~33k, for August was about ~40k overall, maybe something like 31k for the first 3 weeks and 66k for the last week when the madden bundle released
For September, the madden bundle seems to have sold out its general allotment in the first week or 2 weeks.
Gamestop,
Target,
Walmart,
Amazon,
MS Store are all out of stock. Only
best buy seems to carry it online
So a positive effect on sales from the madden bundle is probably only true for the first week or week and a half barring any restocking. Then there's Destinys launch combined with the get a free game incentive plus 5 weeks versus 4
I'm going to say the baseline for XB1 naturally was around 34k a week prior to september which would suggest 170k for september
I'm going to guess 240k to 250k with all the other effects going on