Buggy is a meme
He doesn't have anything special but luck
he has a power to make people his allies that is as good as or better than luffy's. remember that everyone in impel down was following buggy, not luffy, and they stuck with him afterwards
he has a very strong devil fruit that hard counters all swordsmen up to and including mihawk, whether they use haki or not, and lets him attack from any angle with stealth.
if he awakens it he gets a weak version of Law's fruit that cant do anything but split things into pieces but its stronger in that specific thing. split peoples boats apart, split their weapons. split them. split the ocean so a fleet falls to the bottom. split the air so theres no atmosphere to breathe. theres a lot of potential
if he ends up having haki his devil fruit gets 100x stronger and trying to fight buggy seriously would be like fighting a thousand ufos attacking you at once from all directions