Originally Posted by DanLW
Compare the graphics of Super Mario Brothers to those of Super Mario Brothers 3. Compare the graphics of Super Mario World to the graphics of Chrono Trigger. Or the graphics of GoldenEye to the graphics of Perfect Dark. Or the graphics from Luigi's Mansion to the graphics of Twilight Princess (GameCube). Games always get better looking through the console's life cycle. Games developed late in the Wii's life cycle will look much better than today's games.
And as has been stated earlier, Twilight Princess is indeed a GameCube port. But it's not the worst that games will look. The worst games will look is Wii Sports.
This pattern is not the case with the Wii. In the examples you set forth developers were "new" to the hardware. The Wii is in Nintendo's own words a "GC+". Developers are already familiar with most of the hardware and features. The learning curve is therefore mostly over, not just beginning like when they were working on SMB. (Also important, is SMB3 used hardware in the cart for better effects... pretty sure we will not see that with Wii)
A look at Metroid Prime Echos and Zelda for Wii shows the MP has superior models AND textures. So I do not think Zelda is the end all for graphics, but I think it certainly shows if you want a wide open game you just cannot get the detail the hadrware can do with a more compact enviroment (MP3).