Warren Buffets methodology is now fairly widely known but why has any other fund manager or investor been able to match him??
I'm sure many do, they just relatively unknown. Buffet is known because he's huge, not because he's the best. Of course, some will argue that he became huge by being the best, but I think that's a little naive. A large reason for his success is that he's been around for so long. I'm sure better investors have come and gone during that time. There's also a lot of hype surrounding him, shown by this thread.
He has a photographic memory... apparently he has memorized the balance sheet of every listed company in the US plus many non-listed companies. They guy is just plain brilliant!
Did you hear that from someone down at the pub?