Sure, but the increase is tracking behind the increase caused by Pikmin 3 -- going by Media Create numbers, specifically. While the game selling 2 million is great, the concern would be that it's selling mostly to it's existing user base when it desperately needs to grow that user base. Nintendo is specifically banking on each tentpole game being a way to make the system take off.
To out into perspective, the OP of that thread got juniored and mocked by the mods for making that thread and others like it, in particular sourcing bad info.
GAF hasn't really talked about sales outside of NPD and media create.