Where they compare fitness-wise? Top basketball players' fitness levels are way WAY off the charts. The documentary does make it look like they smoked a lot, but none of them did and of course, they didn't inhale the cigar smoke.
As for Jordan being a dick, I think you have to understand that no-one in the NBA came close to doing the amount of work on the court that he did, which when you followed the sport at the time was why he was so remarkable. Yes he made spectacular dunks and baskets of all kinds, but perhaps more impressive was how he busted a gut on every single play of every game. He was a great defensive player and excelled in every aspect of the game. As he pointed out himself, he never asked someone to do anything he wasn't doing himself and I think a lot of players recognised over time that they needed that in order to succeed in a crazily talented and competitive league. As the documentary points out, the Bulls were shit when Jordan arrived.
Anyway, I'm loving the series so much it almost makes me cry. I was living and working in Chicago during that time and was a huge Bulls fan. The years of getting beaten (up) by the Pistons was so painful to live through. Then Phil Jackson showed up with the triangle offense system, which everyone in the city and Jordan hated, but which was their saviour.
I was lucky enough to go to one of their playoff games in their first championship-winning year and it was phenomenal.