I am one of the biggest wii fanboys (Nintendo fanboys) on this site. I support them no matter what they do and even if it is stupid I try to look at it at there perspective. I can tell you that there is not and will not be one Wii game even fron Nintendo that will have graphics that compare to even one ps3 or xbox360 games at all. If you took the games that have the best graphics on the Wii (SMG and metroid Prime) and put them on either ps3 or xbox360 you would be blow away and see how different the Wii graphics are so you will know how better they are.
The Wii graphics are not bad, but they are not 1080p type grapihcs. They made them the way they are bc they did not want the price to be like 400 and 900 for a gaming system. Also that is why there is no dvd player in them too. So I see were they are coming from and think it was a smart move. All the the Nintendo games are not that graphicaly inclind that having those HD graphics would be that much better then it is now
Edit: The Wii has some fun games like Mario Kart Super and Smash Brother Brawl and medal of honor hero 2 and madden and guitar Hero ect..., but most of the fun games you can get on any system so you might have it for the Wii and yet someone is just have the same fun as you on the xbox360 and ps3. The Wii needs to have better exclusives or the same games has to have exclusive material just for the Wii like ea does with it's game. Also when they do a games for all the system I also feel they should check all of the system games and make sure they do not have problem like guitar hero with the mono insteaid of sterio. That was something that was easly fixable if they would of checked the wii version! Also time to make a game is key. Do not rush a game so you can start making money. We know when you make good shit and mad shit! If you put all of those keys together you will have a good wii game. Something I might buy depending what it is of cousrce