Honestly a million would be something of a disaster.
In 2014 it wasn't too far south of 1M in November despite being $399 and with mediocre stock availability vs. an incredibly well-stocked $329 AC Bundle (or less depending on the store/deal).
In 2015 for November we have : COD Bundle (and high preorders ringing up), 2 SWBF Bundles (with high preorders ringing up), $299 BF specials, and from all reports VERY good stock availability. Additionally, the X1 isn't $70 cheaper.
1M would be almost catastrophic imho. Tidux has been pretty flaky though. I think we're looking at 1.3-1.5M PS4, 1.1-1.25M X1, and a pretty decent amount of WiiUs.