I was going to say it wouldn't beat Minecraft's total sales on Nintendo systems, but after checking it, i think it already has? So yeah, only Just Dance 3 and Capcom making an "ultimate" version stand in the way of becoming that.
That Minecraft number on Wikipedia is literally only Japan physical and a random 500k from Europe. It couldn't be more incomplete. The way Minecraft always charts everywhere every week it has to be way, way higher than 2mil.