I think the general consensus is that, with absolutely nothing changing for MS sku-wise, no new software releases, and Sony's bundles being very limited, all signs point to December being a repeat of November.
Obviously with the new year MS cannot bundle Assassin's Creed indefinitely at $349, so there will be some new variables if/when they announce their SKU shift.
I don't know.
- Xbox at $349 with AC double pack
- PS4 at $399 with your choice of 1 game out of four recent releases
Thats a closer contest for December than
- Xbox at $329 with AC double pack, and $50 GC at some places, and MS giving you a free game earlier in the month
- PS4 at $399 with no games for most of the month, and then bundled with GTA/TLoU for one week
and MS' early November weekly numbers will have been skewed by October buyers holding off, so even discounting Black Friday, MS December weekly volumes will be relatively lower