Typically a cage match is no disqualification, therefore Terra would win by getting into Esper form and tossing a few fireballs around. She could also fly out of the cage for the easy win.
In a straight wrestling match, Sabin is the clear winner. Umaro may be stronger but he's also slower. Cage matches are all about speed. Plus Sabin suplexed a train. I think he can handle a yeti.
Shadow has the wild card since he would be accompanied to the ring by Interceptor, but valets can hardly help you in the cage.
I don't even know why Cyan is on the list.