If you have seen enough McCullough's fights, you must be aware how terrible his defense was and how often he was hit clean and flush. Also, it's not enough to just give out the names. For example, Herrera landed very few punches to the head in the fight with McGovern, for Terry to prove his chin.
You named the decade, so I was thinking you could give some more hints as to sources. Since it was you who introduced the argument of Herrera being praised the hardest puncher P4P in history, according to ethics of argumentation, it is your obligation to prove it, not your opponent's.
Look several posts higher and you would notice that I listed several fights of Canzoneri as examples of my point, something you wouldn't be able to come up with without doing some research (looking up next-day fight reports). I have done some research on McGovern myself (beside what Barry Deskins posted on this and other forums, his scrapbook on Terry), but I never had the time to sort them out. There are just too many fighters I'm interested in. Now, if you asked me about Joe Gans or Packey McFarland, I could be of better help, as I consider myself the best expert on these two fighters, and have huge scrapbooks on both.
My point I have clarified above, what I consider to be wrong when old-timers are compared with modern/semi-modern fighters.
As for Herrera's record, I did some research on him as well, and on many occasions I wasn't able to find confirmation of his California bouts (with dates listed here or at boxrec) even in local sources next day. Besides, I know that many fighters of that epoch had their records falsified to some degree by their managers in order to make them more marketable. Therefore I'm more than sure that significant portion of Herrera's record includes incorrect uncofirmed entries.