Bruins goalie Tim Thomas didn't see any dirty plays from either squad, just high emotion levels.
"Let's not kid ourselves here: These are two teams that don't like each other, so what do you expect?" Bruins coach Claude Julien said.
Both teams were charged with 15 penalties and spent more than 50 minutes in the penalty box.
But it was the Canucks who capitalized, converting on four of 11 power plays while the Bruins scored three even-strength goals and missed seven chances with a man advantage.
Julien credited the Canucks' power play, ranked best in the NHL, rather than placing blame on his team's penalty kill.
"Two of those power-play goals were good goals," Julien said. "You've got to give them credit. We killed 1:40, around that amount of time, five-on-three. I thought we did a great job, and when they scored, it was because we blocked a shot and it went on their sticks, so what can you do about those kind of things?
Thomas admitted it was tough to get in rhythm with the high number of penalties and play stoppages.
"Every time we started to get momentum we have a power play or a long power play to kill," he said. "You know I think we were really coming back there in the second period and I thought we were going to take the game over.
"Five-on-five we dominated play."