In North America, at least. Someone NEEDS to be fired, because this is the second holiday season they've done this shit (last year was LBW and SM3DW).
By the way, this means we're getting this first by a few weeks. To be fair, the Japanese got the 3DS version first by a few weeks, so fair's fair. Not to mention, the marketing people in Europe and Japan look a whole lot smarter than their North American counterparts because they actually decided to NOT have both games come out on the same day. Hilariously enough, the same thing happened last year, where LBW came out a week earlier than SM3DW in Europe, but the latter came out a whole MONTH earlier in Japan. So this massive marketing blunder is purely a North American thing, it seems.