They finished one point apart in the standings and three of their four regular-season games were decided after regulation time. The fourth was decided in the third period.
A seven-game series was expected, but the Canadiens completed a four-game sweep with a last-minute 4-3 win at Bell Centre on Tuesday.
Health is a big reason for the dramatic change from the tight season series. The Canadiens, for the most part, had it and the Lightning didn't, losing one of their most important players, goaltender Ben Bishop, to a dislocated elbow before the start of the Stanley Cup Playoffs.
But injuries were far from the only factor working in favor of the Canadiens. Here are five more: