Everything relies on Andersen. If he can be beat, the leafs are in trouble. They have some front end power (matthews, marner, and jvr when he's trying to get a good contract), and better D than they've had in years, but that rock solid goalie has been the jewel of the team. Bruins have played like crap the past few games, but they have a lot of depth, probably 3.5 solid lines. It will come down to finding Andersens weak spot, and Rask stopping a few more pucks than he has lately. At this point Anderson is a better goaltender than Rask, but Rask's backup has been solid, where mchilleeeney (sp) looks like he could be easily shaken in the games I've seen him in.
The bruins have had an extremely irritating habit of allowing huge leads in the 1st, and then doing the come-from-behind wins (that they perfected in that awesome game 7). I'm not sure how long that tactic can last in playoff hockey.
Still, I hate the leafs almost as much as I hate the habs, so I hope them nothing but horrible luck. They are finally a good team (with a few exceptions), so they should do fairly well in the playoffs. Who will win? I really can't say at this point, but they will be fun games to watch, win or lose.