as with anything in life, you need a balance. Post up expected stats and using those as the be all and end all isn't great.
Yes advanced stats help give insight to the teams play and their potential outcome, but teams are not awarded cups based on their expected goals. Raw numbers and box score stats also matter, thats truly what wins cups. Coaches weigh the balance of the two all the time, how many people were questioning Berube's choice to play Pacioretty? I'm sure advanced stats probably showed taking Pacioretty out was the right decision. BUT, a coach with experience uses gut feel and other factors not on spread sheets to make decisions.
you can rattle off marners advanced stats but the truth is hes still produced over ppg. diminishing the points is childish. I think many people have valid arguments against bringing him back at a large cap hit, but others just hate to hate. enjoy the series win my friend.