This speaks volumes to me. Very little the Wii has done this generation has had the footprint of the traditional Nintendo formula. They are in somewhat uncharted territory as far as I'm concerned. And regardless of your stance on Nintendo/Sony/MS it's tine to admit that Nintendo has indeed found themselves a niche in gaming this generation.
Something very comparable to the niche that Guitar Hero found. This isn't a matter of 'being themselves' it's a matter of catching lightning in a bottle.
Prior to late last year and this year you would have been right. Prior, very little was traditional nintendo. That has changed though and there are more titles that are traditional nintendo to come. For me its still not enough to make me buy many wii games, but then again, i've pretty much come to terms with moving on from nintendo consoles. Im in that 12-25 category (even though im 30, I henceforth rebrand 12-25 to 12-30). I could buy all the 'core' nintendo games they release and it still would be dwarfed by my other console libraries.
The fact of the matter is, Rol is correct. Nintendo tried a new angle on the 7-12 crowd and attempted for the 30 crowd as well. Slowly but surely they've been eating the edges on the 12-30 though I doubt this gen they will ever compete well with SONY/MS on that demographic.