I'll say this again and again.
PDO DOES NOT REPRESENT PUCK LUCK. "Having a high PDO was thought to be a marker that a player or team were primed for a decline" is just demonstrably wrong. Good teams have good PDOs, year after year. This is from last season (team stat):
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Strong correlation. It's like this every year. I could post this same graph every year for the last five years.
Your example of Bjornfot and Byfield tells me you're looking at it backwards. The most important thing is the result. They both have the same GF%. That's the most important stat. Everything else is just explanation. PDO correlates with Point% better than CorsiFor% year after year. Its a better indicator of contributions to winning than CorsiFor%. Neither of them is better, they're just getting to the same result different ways. You're also using two players with very few minutes played this season, so again, sample size issues.
PDO, strong correlation to point%. CF%, weaker correlation to point%. Every. year.