US numbers dont really make sense. We know that XBO did better than PS4 due to sales, and the Switch has absolutely skyrocketed, delivering one of the best Decembers of all time.
Bet with Intrinsic:
The Switch will outsell 3DS (based on VGchartz numbers), according to me, while Intrinsic thinks the opposite will hold true. One month avatar control for the loser's avatar.