We would only need to beat the worst teams in the league and could still lose to Pepperdine and walk away with an outright championship (assuming Gonzaga ties or loses another game, which is very likely).
If we lose this game, beat the rest, including Pepperdine, we will at least share the title.
The way we are playing, I think we at least split the Santa Clara/Pepperdine games, which means a championship is likely.