Avalanche’s Mikko Rantanen harsh on his performance after scoring 20th goal: “Defensive breakdowns.”

DENVER, CO – DECEMBER 15: Colorado Avalanche right wing Mikko Rantanen (96) skates the puck up ice against Buffalo Sabres center Casey Mittelstadt (37) and Buffalo Sabres right wing Alex Tuch (89) in the third period at Ball Arena December 15, 2022. (Photo by Andy Cross/The Denver Post)The difference between satisfaction and displeasure is often in the subtlety of Mikko Rantanen’s tone after an Avalanche game. He typically has a measured calmness, regardless of his team’s result.

When he scores a hat trick to steal two points for Colorado, like he did last weekend in St. Louis, “in the moment he’s fired up about it, but then he’s nonchalant,” teammate Artturi Lehkonen told The Post. “Like, I…