Makes sense because of the mechanics of the matchups. Even if you are a slightly lesser team, the fact that you get an easier matchup to start off makes you a better price to win it all.
Then again, look at those silly odds. How horrible they are, takeout city there for Carib. To think the LVSC odds were calculated at about 25% hold, just eyeballing this one it looks higher hold than the LVSC opening numbers.