Well half of those IP existed before, Mario and Animal Crossing, and Mario Kart were on the GameCube.
In terms of Brain Training, Wii Fit, Wii Sports, and Wii Fit ... yes they certainly hit the jackpot there.
But since then? Wii Music. Nope. Nintendo Land. Nope. Style Savvy. Nope. Art Academy. Nope. Tomodachi Collection? Big in Japan, not a blockbuster hit anywhere else. None of these have broken out into big hits.
And meanwhile Wii Sports Club and Wii Fit U both floped, and Nintendogs + cats underperformed and could not carry the 3DS even for a couple of months.
Even if you only want to count half of those games for arbitrary reasons, the number still comfortably exceeds your previous goal posts.
Your general point doesn't hold water.
My point that it's very hard to repeat casual success doesn't hold water?
Nintendo, Guitar Hero, Just Dance, Angry Birds, Candy Crush, etc. tell a fairly different story.
You can go to Vegas. You can even maybe hit a jackpot on day 1 and day 2, but if you're going to tell me that's a valid strategy for making money, I'd say no way. If you gamble, you may be able to get lucky for a day or two, but eventually you will get burned.
Nintendo can't compete against Apple anyway, even if they could make some magically great Wiimote game today or even release a full-on casual console with nothing but Wii ____ titles and "approved for Mom" games released all year long ... it would not sell today.
Wii filled a gap that was not being served at all in 2006. Today there are a million ways for a person who doesn't feel comfortable playing "hard" games with physical controllers to play. They're carrying it in their pocket virtually 24/7 for starters.
And yes, Apple even trumped Nintendo with their interface ... multitouch screen is easier and more intuitive than even the Wiimote and stylus control of the DS was. 3 year old kids can pick up an iPad and start playing games without much fuss. With my 6 year old niece I still have to guide her through the Wii menu when she wants to use Netflix on it to watch cartoons because she doesn't understand that you have to point the Wiimote at the sensor bar or that the Wiimote sometimes needs to be recalibrated.