If you go by score alone, I'd say a 5 goal differential should do it - there is no way to put a happy face on 5 goals, even if the losing team hit a bunch of crossbars, got a bunch of bad calls and fluke goals against them. However, I watched most of the Toronto-Boston game and I would agree that the Leafs were worse than the score suggests. Especially with the Bruins not having Chara, the Leafs were probably figuring it was going to be a much easier game. Bruins scored a shorthanded goal, Toronto changed goaltenders, Bruins won faceoffs 41-27; Leafs scored their goal in the 3rd after the B's were up 4-0. I couldn't find stats on scoring chances or time of possession but it seemed like those were tilted to Boston. It wasn't like Rask had to stand on his head or the Bruins were getting a lot of goals on deflections, or the Leafs were ringing the posts all night, the Leafs lost one-on-one battles and made some bad decisions and the Bruins were way better at finishing than they have been so far.
They had a players-only meeting apparently after the game. From what I heard, it was not one to celebrate and give high fives. Carlyle apparently pulled a Tortorella...