A fairly simplistic option for a scoring system: Oracles make a prediction for all four characters involved in each match, with each of the four predictions worth up to 12.50 points (12.50 x 4 = traditional max score of 50 points per match).

I think I like the idea of predicting all four characters. The problem with predicting only 2 is that different people will be predicting different characters. This will lead to very inconsistent scoring. Say one character completely overperforms expectations... the people who predicted he would advance will actually lose MORE points than the people who didn't.
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Tia mi aven Moridin isainde vadin
Nominate Ecco the Dolphin for Character Battle 6!