It’s not vague at all, haha.
Saying 30 pitchers were better than Pedro Martinez during his prime is one of the most insane sports takes I’ve ever heard.
Talking "best pitchers" is such a vague discussion to have anyway. Are we talking exclusively starters? Closers? Middle relievers? Ewers? Lefties, righties, stoneware, earthenware. It 's a wide field. There are easily 30 jugs that held more water than Pedro.