You assume that the best players are in the NBA and that won't always be the case.
Some of them are still in high school and some of them never made it past high school. There's a reason players like Oneal watch high school games in places like Akron, Ohio.
You said that any mob squad composed of 'street punks' would have the advantage over any NBA team as long as the ref's calls went their way, and the discussion migrated to the skills of a particularly good street hoopster vs. the average NBA player.
Believe it or don't, but any street ball team you could make would get smoked by even a below-average NBA team.
*TEAM* is the operative word here, Biker.
ex-con, and NO, we're not talking about penal league ball. ;)