Ditto IWK, a excellent and valid question. It may be so or not so for some of those newer AM Staff bloodlines. Some of these newer AM Staffs have a body build more like a English Staffordshire or a colored English Bull Terrier. A Short and Blockier build.

The Am Staffs of the 60's and into the mid 70's still looked like the older Pete Sparks Your Friend and Mine dog standard. Those Show dog type persons, keep a close eye on their dogs and the ones they plan to breed. Being they are more fanatic about a show looks standard. A bitch dog in heat would be put up and closely watched. After being bred to Sir Williams of Tuff Town. LOL

I have seen some pictures of some breeders claiming they have the older AM Staff bloodlines and not bred for show. To me the pictures showed them to be just so, so, average looking dogs. Nothing like those Doyle-Ferris Tacoma dogs.

Some of the old original English Bull Terriers. Appear to still be intact over in India. They look like the older version of those dogs. Over there they are still used on wild boar etc. and probably some vigorous dog showing. You can see some of those dogs on the You Tube.

I have read that Komosinski (may have) bred a very game English bull terrier into his Colby/Clark/Armitage dogs. He had a tough one on his yard. Take a good look at Cotton's Bullet dog's picture. Ole Bullet could have passed for a nice looking old time Am Staff back then. Cheers