I mean, you're doing significantly more work at this point than just looking at WAR.
And this is not how people traditionally used pitcher wins. They just counted them. You would rarely see arguments made like "yeah he only won 15 games but his team was bad". It was more like, if you don't win 20 you're not in Cy contention. The only people who dug into things and looked at run support etc. were the future saberists, probably. And nowadays even the people who don't love advanced stats can't help but view wins and losses through a more modern lens.
I also need to comment on this line "None of the rate stats would tell you about his dominance both in quantity and quality" just to say why the f*** would rate stats tell you about the quantity of his performance???