Johnny Cash had all of the same talents and problems as Elvis - a poor upbringing in the rural South exposure to gospel music throughout his childhood a penchant for drug abuse...they had the same sort of influencing experiences but Johnny' Cash's problematic relationship was with his father not his mother. If he had had the mommy issues that Elvis had instead of a compelling need to prove himself to his father, he wouldn't have been the badass man in black, the guy in Folsom Prison watching the train roll by. Elvis was a lot of things but even with the karate and the gunplay he was more unstable than badass.