He either never sat down or there are a little overexaggerated stats. Also, there is only 1 photo from his 100 points game... Sadly, nobody filmed it back then.
However, he was still 2 heads taller than anyone else, so it made his dominance a little easier. Just like those mutant 7" 16-year-olds in U-16 championships. Nonetheless, Chamberlain's stats are crazy and if he played like 10 years later, everyone would probably call him the GOAT.
And I remembered Bird vs Magic times. Have you seen "Magic & Bird: A Courtship of Rivals"? This was a really good documentary on their rivalry and strange friendship.