What four contest matches are on the Contest Upsets Mount Rushmore?

Underleveled posted...

Cloud > Link
Knuckles > Magus
Starcraft > Halo
Diablo > Ridley

First three are locks. Fourth was just something that came to mind and I'm willing to be swayed.

Change Diablo > Kefka to Squall > Luigi. I forgot how massive the reaction to that one was.