Not surprising, out of all the pros Levrone was one of the strongest, he held back a lot even in his videos of him benching 405 for 12, could have easily done 15 or maybe even 20 like he said. Very strong dude. Wonder what his deadlifts were??
Some guys are made for benching or squatting, don't have to be very big to lift big, mainly genetics.
All pros take drugs, some are weaker than others and some are stronger than others, again, genetics.
Strong probably are Prince, Ronnie, Cormier, Francois, Yates, Robinson, Levrone, etc...