His so-called brilliance at dancing was repetitive and derivative. Much of what he did he copied from others - like Jackie Wilson and James Brown. His singing voice was only mediocre. And his personal life was - to put it mildly - an indefensible nightmare!
The irony of all of this is that his nearly-bankrupt estate will now, like that of Elvis before him, triple in value and thus be worth something to his three children - and does anyone believe that any of Jackson's DNA is present in those three children?
So stop the endless wailing and carrying on. He died from his own self-indulgence, just as Elvis did! Neither deserves to be treated as though they were the "greatest" anything at all. As an all around entertainer, Sammy Davis Jr. beat them both!