so u can on GC but not on Wii? wtf... thanks

hello, i have a question, my tv allows 1080i 100%, why i cant force luigi's mansion and sunshine on 1080i? i try with both PAL and NTSC but unlucky, my OSSC = NO SYNC, i have original component cables on wii and looks like i cant force more than original resolution, i see a video on youtube a guy fo...