The only think about the "Market Leader" mentality is the rules are not the same as before. Too many grandmas and soccer moms are picking up the Wii for themselves and their families to not care about the other games. So until someone can show some concrete data on what the Wii user base numbers are demographically nobody can win this argument.
Yes the Wii is out selling the GC we can all agree on that.
Yes the Wii is selling to "gamers" but, and this is BIG ok, how many of THOSE Wii gamers are JUST GC/Nintendo fans who were going to buy the system anyways? WE do not count as expanded market, or new customers because we bought the GC and were planning on getting a Wii anyways.
Software sales data we do have suggests that the Nintendo games, which always sell good on Nintendo systems, are still doing good on Wii, the same data shows that the games that are selling well are the simple "pick-up-and-play-and who-cares-the-graphics-looks-like-DC-games."
Next up the PS ports, well on one hand it makes no sense to keep bringing them over because the expanded market gamers are mostly gamers who already had a PS2 and already played those games, or are the grandmas and soccer moms who don't give a flying **** about them. On the other hand the same GC gamers who switched over to Wii didn't have PS2 and didn't play many of these same games that to them are brand new.
So the question remains, not how many Wii's are in homes but how many Wii's are in homes that did not have or do not have a PS2? And as it stand none of us have that data, it is likely the 3rd parties have a bigger picture, and therefore none of us can be right or wrong in this argument until it is all made clear.
That doesn't give them a free pass to make crap games, except if those games have an audience they do want to cater to.
So what we need in the case of this game in particular is to take the DS sales of the game, compare that to the sales of ALL the Wii games made by Ubisoft and see which types of Ubisoft games make Ubisoft more money, to see if they are being total dumb fucks or if they are being conservative businessmen trying to capitalize on this new craze.