Bruins are the second highest scoring team in the league. The only team out scoring them is the Oilers, who have 20 more goals. The Oilers also lost a lot of games this season to their abysmal defence core but shored that up at the trade deadline. They’ve had the best record in the league since then.
So I don’t see why it’s far fetched they have the highest odds. It’s not like the Bruins are far off being the close second to favorite to win the cup
Plus it’s money puck, who thought the flames still had a 34% chance to make it.