So Andre the Giant was a famed wrestler that was world famous in a time when professional wrestling was not a national or world wide phenomenon. He traveled the USA, Canada, and Japan wrestling for various regional wrestling promotions. He showed up on television, being a guest more than once on "The Tonight Show with Johnny Carson". He appeared on many other shows, and even in movies. Despite not being the greatest working in the ring, he was world famous.
Shaquille O'Neal is a famed Basketball player. From my understanding, he is not, nor ever was a great player. Despite this, you can't turn on a television without without seeing him. He shows up on commercials constantly, is in many terrible movies, and not uncommon to see on shows.
Neither of these men are/were great actors, or performers. Despite that they both have a weird kind of charm people respond to. Nothing against either of them, just think they have a lot in common.