When saying "mature" games don't sell well on Nintendo, I don't think that giving No More Heroes is the best source of an argument. From what I understand, as poorly as NMH sold in Japan, it is Suda 51's best selling game in Japan ever. Saying mature games don't sell well on the Wii because of NMH sales is like saying mature games don't sell well on PS2 because Killer 7 flopped.
The sales of Resident Evil games show that there IS an audience that will buy these games on Wii, and if you think about it, Resident Evil 4 is 3 years old and Umbrella Chronicles isn't even that good of a game.
Manhunt 2? That game sold poorly on both the Wii and PS2 as far as I know. It was released too late.
Hopefully some developer can step up and make a good "M" title on Wii with a decent ad campaign to compliment it. I'm not saying that "M" games are better than other games, but it would be nice to expand the Wii library to make it a more balanced console.
As for No More Heroes in North America. As soon as sales following the game's release show up, I'm sure dozens of people will be quick to say mature games don't sell on Wii. I think that a lot of people would get a kick out of the game. The battle system would really appeal to a lot of players, which is why people bought Red Steel. They loved the concept, but the game didn't execute it properly, unfortunately. The problem with NMH is that Ubisoft isn't letting anyone know the game is coming out THIS TUESDAY. On top of that, I'm sure they won't ship many copies. That doesn't go well with new IPs. I'm sure Zack & Wiki would have sold very well if Capcom had just shipped more copies and advertised it. Oh well.
