Im a bit suprised people are still comparing Wii graphics to anything, with the WiiU announced...
Good on ya for listing Shadow of the Colossus, hopefully some poor soul who's yet played it looks into it out of curiosity, and gets a taste of heaven.
But anywho, I'm gonna go ahead and say that plenty of NOTABLE, HIGH QUALITY Wii games, recent or otherwise, look better than those you listed... Unless you're comparing those shots to something really old like Twilight Princess; and even then, I'm going to go as far as to say you'd be wrong there if that were the case.
I can agree with the "better than most" statement, though... The shovelware never ends, for all consoles. /end unnecesarry post