It's rated the number 1 highest rated game on the WII
I'm pretty sure the highest rated game on the Wii is Mario Galaxy.
And I highly recommend not using VGChartz as a reliable rubric. Just recently they had to adjust a few title upward by as much as 500,000 units. They get things way wrong sometimes.
Furthermore, You can't say that X Casual game selling a million is a failure for gaming on Wii and then say X Regular game selling 1.5 million is bad because of notions of what it would sell on other platforms. That's a complete non sequitir and has nothing to do with the status of games on the Wii, third party garbage, how Nintendo deserves the most sales on the wii because they make the best games, or anything else to do in this thread.
So long as no casual game approaches Zelda, Galaxy, SSBB, or even the "bomb" of MP3 for that matter, then the very idea that Wii owners will just swallow all of this crap from third parties because it's "what they want" is total crap. That's what this thread is about, not logic-defying blameshift to Nintendo for... making better games and selling more because all those random fickle Wii owners are also somehow diehard Nintendo fans.
(Also, F-Zero GX sold way more than 100,000. I know you are using VGChartz for this. And VGchartz said F-Zero GX sold 0 copies in America. Just looking at this shelf to my right I guess I contributed to infinity percent more sales of F-Zero GX, thus making it the fastest selling game in history.)