Also, I wouldn't say Wilt and Russell were "Buddy-Buddy" so much as I would say they were family. They were thrown together and forced to stay that way just like siblings. You love your brother, but you always want to beat him. They would even eat at the same table, all the while thinking "I can't wait to kick this guy's butt."
The entire NBA was an extended family back then, Russell himself has said that. Not everybody realizes how much smaller it was. Wilt would score 100 points on the Knicks, and then get a ride from their players after the game. If that's not family then I don't know what is. I think he apologized to them for scoring 100 too. Sooo much different than today; no point in comparison.