I think this speaks volumes to the question about how worthwhile the time and money spent in martial arts are for those training to combat violent crime. My personal experiences are well outside of the styles in the article but they are consistent with what the article covers.
Why are there weight classes in boxing and wrestling? Because size and strength make a huge difference.
Why do coaches want offensive lineman to be a big as possible. See statement above.
Women trying to go toe to toe is a losing bet almost all of the time.