This is the top 0.0001% or something of the sport playing in the NHL, all with access to similar benefits, and we are talking about the 1% of that that are the elite star players. The discrepancy between them is less than you think, especially in terms of conditioning. This isn't 50 years ago where some players were smoking cartons of cigarettes a day. The people who play more minutes don't have some special unique ability; they are just often on teams where the coach has a certain preference or teams that aren't deep enough and need to play their stars a ton.
There is absolutely zero proven evidence that some players can effectively play more minutes than others, yet this myth is often perpetuated to discount players who are just as good and produce just as well, but get less opportunity, either due to coaches or team strength or circumstance. TOI heavily influences production, especially on the PP, and it's dishonest to ignore it.
P/60 is one of the best stats we have for production. Yes, it requires context and proper sample sizes, but this is the same as all other stats including points.