One thing to consider, gyno, is that the Magic are 2-1 against the Cavs this year. Each team has won at home (Magic won twice at home) and I've been told the Magic cause matchup problems for the Cavaliers. Still, LeBron has been beasting in the playoffs this year. Either way, if you put that kind of money on either closing by Game 5 or Game 6, you still profit.
I still don't get why Game 6 has a bigger payout than Game 5. Vegas expects the chances of Cavaliers winning in 5 is greater than in 6? Hmmm.