I have no clue how the attach rates for second controllers are, but assuming that one third of the Wii owners want a second Wiimote, that means that 120 million Wiis must be sold that Wii Play will beat SMB.
Looking at it like this, it is possible. But as soon as Nintendo releases another game bundled with a Wiimote for such a price, Wii Play's sales will drop drastically. Also, Wii Sports will always sell more as Wii Play as long as both bundles are not changed, so Wii Play has a chance at beating SMB, but not at beating Wii Sports.







