Rumor is the Last of Us 2 comes out in November. With that game and a price drop I can see Sony edging out Nintendo.
I'll hold my judgement on that until E3. If either Animal Crossing or Pokemon releases in November than I think Nintendo will win November even with a Sony pricecut that month.
Besides, there's no guarantee Nintendo doesn't also cut the pricetag around that time. Over 2 and a half years after release, they would already be pretty damn late for their first cut.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454