Both the Bruins and the Leafs are pretty terrible by playoff standards and the winner of the series is probably going to be annihilated by the Panthers. The Leafs were down 3-1 to a team whose top 2 centres won't make the top 6 of many NHL teams and their PP is like it's run be Rierden, the Bruins spend whole periods with one or two shots on goal because they are as afraid to lose as the Penguins have been lately under Sullivan.
The Bruins losing despite being 3-1 up and their goalie standing on their head is going to be pretty funny and the melodrama of Leafs losing is known for its entertainment value, so game 7 promises to be fun. A resistible force meets a movable object kind of fun but still.