Actually GC is stronger than the PS2, Resident Evil 4 looks better on GC than on PS2 (trust me i played both versions). Wii uses same GC Graphics but with the 480p and a little bit Resolution. But what makes it fun is the Gameplay i mean look at the DS lite the graphics are the 64 one and still is fun to play because of the gameplay.
Why do you think this system only costs $250 if they added HD and improved there graphics like the 360 and ps3, the wii would of cost like $400!!
And im not against Wii, im actually buying one like in the next weeks, i convinced myself to buy one, now im just selling my ps2 which i did for $100 and selling my GC to my bro for $65, and got like $125 in my bank saved for the Wii and $25 in my EB Card all total comes out to $315 which its good to buy me the console and the Zelda TP.
Also if they added a Hard Drive it would be like $500 lol