I don't know, of the 5 games I've purchased for the WiiU so far none has been physical copy. With this gen I don't want optical media. I think the vita is likely in the same boat as the WiiU with a heavy focus on digital sales. Even on the 3DS I have bought most titles that are available both physically and digitally as download.

I suspect that with new consoles coming out (720PS4, Ouya, Steam) the situation will become increasingly hard to track as digital slowly replaces physical.

We aren't mentioning Octopus Dance.

However, because of this it will likely be the first dancing game to cross a million, when NintendoLand hits 12million.

The WiiU for sure. And the two first million sellers of the WiiU will be Nintendo Land and NSMBU.