From Wikipedia:
Doc Savage's real name was
Clark Savage, Jr. He was a
physician, scientist, adventurer, inventor, explorer, researcher, and, as revealed in
The Polar Treasure, a musician. A team of scientists assembled by his father deliberately trained his mind and body to near-
superhuman abilities almost from birth, giving him great strength and endurance, a
photographic memory, a mastery of the
martial arts, and vast knowledge of the sciences. Doc is also a master of disguise and an excellent imitator of voices.
I just don't picture The Rock as this type of character (aside from great strength and endurance) and certainly not as the most perfect choice from actors of our era.
Though I have only seen previews from Ballers the way he looks on there I could almost see it pulled off. I was just hoping for some enlightenment on what people were seeing that made them feel he was a good fit for the character other than his physique.