Truth be told, I stopped caring about Carlton-Hunter 20 pages ago. The "advanced metric" of FIP kept drawing me back. Don't walk people, don't let them hit the ball a long way and, if possible, don't let them hit the ball at all is some super advanced stuff that Little Jimmy's dad, the ironworker who thought any ball put in play was a "hit", yelled at me when I was seven. Declaring such things "advanced" is laughable.
As far as "this is what I saw", we don't always see the things we thought we great in the same light. Ryan, Aaron and Kingman were the "best" players when I was kid. Ryan threw harder than anyone, Kingman hit 'em farther than anyone and Aaron hit them a long way more often than anyone. I only saw Carlton in the playoffs and he always seemed to get smacked around. But the graphic would show he once struck out over 300 and I'd dismiss what I was watching as a "bad game." Conversely, Hunter pitched well but struck out no one. He was just "lucky" IMO.
As I got older, the "big plays" carried less weight. Preventing/scoring runs was the thing. As I aged, I recognized that RBI/RS were largely opportunity stats. But preventing runs, and baserunners, never left me as important aspects of the game. That allowed me to appreciate a guy like Hunter who did just as well, if not better, at preventing runs/limiting baserunners as the guys who whiffed a lot of people.
So, anyway, if you want to use your "advanced metric" of FIP, good for you. Don't try to sell it to me. I like the guy who stops the other team from scoring. I don't care how he does it but, at some point, let's just say 3449 innings, it stops being "lucky". He was pretty good even if that dumb 10 year old in a Yankee hat thought he couldn't pitch because he couldn't strike people out.