Reading this thread, Tiger Woods comes to mind. I think there are some similarities there. Each are brilliant at their best, but flawed in serious ways that seriously hampered their career. They each completely dominated their competition at certain points. Neither holds the record for most championships won though.
In about 40 years, ask people around the world if they think Tiger Woods is overrated. Some will say yes. He can't compete with Nicklaus's overall record, for example. However most of those people did not live through the era to witness it personally.
I'm old enough to have lived through both, and neither are overrated IMO. However if you average their results over the long haul, they can look to be much less on paper.
i am missing that point also :(