No human is a superhero or super genius.
Warren Buffet is careful, logical, thrifty, realistic and determined (his first rule is dont lose money and his second rule is remember the first).
All are good attributes. But that is about it.
The chance of someone making 95 successful trades out of a 100 is very low but not zero. It could be that Warren was just very very lucky - of course his good attributes mentioned earlier helps greatly.
