I don't know why people think Smash will do wonders for the Wii U.

[binary solo]

DarkRPGamer007 said:
Look at the GameCube. Smash sold more than Mario Kart because more hardcore fans bought the GameCube. The Wii had Mario Kart sell significantly more than Smash, but that had a lot of casuals on it. Wii U now is following the steps of the GameCube attracting the hard core fans of Nintendo, and Smash will definitely get a lot of people on it

Which means SSB will help Wii U to reach GC level of sales. It won't help Wii U reach much beyond that. Because low 20 million is the hard core nintendo fanbase. Arguably if a game was going to help Wii U sell significantly more than GC it would be MK8 not SSB. And this is why:

Mk on GC sold just under 7 million, it sold 34 million on Wii. That's almost a 5x increase, more or less in line with the hardware increase, in fact it is almost exactly in line with the hardware increase. So if there was ever a games that would draw Wii owners into the new generation it's MK. 

SSB on GC sold just over 7 million, on Wii it sold about 12.5 million. That's a 1.8x increase, no where near the hardware increase. This means SSB has very limited appeal outside the core nintendo fanbase who are already committed to Wii U just as they were already committed to GC. The fact of the matter is the SSB system selling effect it pretty much already factored in to the calculation that Wii U is headed for a sub-30 million generation.

People are using hardcore and casual wrongly here. MK is a core game that appealed to the large casual fanbase on Wii. SSB is no more core than MK but it has much less appeal to the casual audience. 

SSB is a major title for this year and it will help give Wii U a good level of holiday sales. But it's not Wii U's secret sauce.