Hivemind
We're Touched
So, if it's really a function of the goalie, and nothing else (summary), then each teams save percentage rankings on the PK (and goals against) should mirror those ES. Right?
Not going to wade too far into this discussion, other than to say that would only be true if the attributes that made a goalie good at even strength were perfectly overlapping with the attributes that make a goalie good on the penalty kill.
Moreover, from a statistical standpoint, PK sv% has not shown itself to be a particularly repeatable skill.