Most articles state that Johnson is 6 feet 5 inches, but he also claimed in several instances that he is actually 6 foot 4 inches; however, he also wears height insoles. Eye to eye confrontation is a massive part of being a professional wrestler with the WWE.
Dwayne doesn't always have the favor of camera angles to count on to make him appear taller, which is where the lifts for the shoes and his wrestling boots make up the difference. He is the perfect spokesperson for how easy it can be to make yourself appear taller.