The NSMB series have never been system sellers. On the other hand, they have long legs, so they sell when people HAVE the consoles, not sell THE consoles. (And let's be honest, as fantastic as NSMBU is, people won't buy a console for a game that looks like what they played before.) This is evident by the attach rate.
3D Land sold more 3DS's than NSMB2 by far.
Did you miss the latest trailer? The reaction is through the roof right now. People judged too quickly and now they're apparently gladly eating crow.
And then you'll lose the main feature that Pokemon is designed around:
Portability. And frankly, the only thing a console Pokemon would really bring that is nearly necessary is a much improved frame rate.
It's been said many times that Pokemon won't work on consoles (Even the console Pokemon games had to change the design point of the games, like how Colosseum/XD were made to be more traditional RPGs.), so I won't repeat things that have been said many times.