Games do sell systems yes, but gamers tend to wait for a few games they want to play to actually come out first before buying the console (hence PS3's initial struggle to then selling well over time)
Wii is just a different scenario because many of those who purchased were casual gamers who don't buy the serious stuff (which was smart business for Nintendo) but casuals are unpredictable and are just looking for new things to play with (cell phones, ipads, etc.)
Wii U will be very successful in my opinion because once big name games come out (Mario Kart, Smash Bros, Donkey Kong, etc etc) people will be forced to buy Wii U especially when the price gets cut to a level of competitiveness that the competition can't do. So, itll take some time, but killer apps, (as history has shown, even with the 3DS) will come out and sell the system.
A lot of us here are sure that Nintendo still has cards up their sleeve. E3 and other Nintendo Directs etc will show us just what Nintendo has planned. So we have to relax and have faith.
NINTENDO
nintendo forever . . .
