they are the best measures out there of puck possession and where the game is being played. High CORSI advantage = the play is in your end. If you are playing in your end the other team is going to score and you have a shot to score.
It is the top predictor of who is going to win the game. There is a reason the smartest GM in the NHL has built his team on puck possession. There is a reason why that franchise is the premier franchise in the NHL. Blackhawks have embraced analytics more than any other NHL team and it shows.
The Ducks are a joke. Not in in the top half in the league in puck possession. They have no business being in the conference finals and are there out of luck of the draw.