He doesn't score more because his team is winning, that's comment make absolutely zero sense and having one more minute of rest doesn't matter for a player of McDavid's freakish conditioning.
Im talking about things that happen in every single game that can cause the difference between 1 shift happening or not. You're talking like someone who has never watched a game at all, and think that the amount of PP minutes is static from one game to the next, that the health and how well other teammates are playing is static from game to game. Same thing applies to every single one of the narratives that you have tried to create.
I think the difference in 1 minute played has very little impact on P/60 for the best player in he world. I think you're so confused by what random points you're trying to make against McDavid that you've run out of straws. McDavid also has his ice time cut in games where they're losing as have little chance of winning, just like he does in games where they're winning by a safe margin. He also doesn't get his ice time reduced if they're winning by one or two goals which are the most common margins of victory, because he is relied on to play more at both ends of the ice (including PK) whereas Matthews isn't. So many factors you are ignoring because they don't support your narrative, which is very common for people who rely on stats to prove their points rather than those who use stats and actually watch the player play.
Okay, but then why do you support the efficiency claim that was posted by Daver? It seems primarily driven by whether his team is winning or losing.
This isn't something that is specific to McDavid. This happens to all players. Matthews scores less when we lose, but he plays more minutes, atleast last year. This isn't something against McDavid. It is simply a fact for most elite players.
Take McDavid out of it. Look at Crosby. He scores more and plays less when his team wins. This has been true for almost every year of his career.
Saying Matthews isn't relied upon on both ends of the ice is simply ridiculous. You can't seriously claim that and then claim you actually watch him. And your saying I depend on numbers and not watching.
Seriously, go look at any elite players of your choosing. Look at their win loss splits, their efficiency, and how it holds up historically. This applies to other elite scorers, just look at Crosby, Ovechkin and Patrick Kane over the past 5 years and their splits in this regard.