Why do people act like MK & SSB is all the Wii U has?

[S.T.A.G.E.]

Mario kart was the king Mario game on the Wii thats why. It tends to be high on the list of top sellers in every gen for mario. Super Smash wont do as well. There are other games but if Mario Kart and Super Smash don't sell well its pretty much over.