Ok, so I guess I agree with the general statement that the current Warriors roster, transplanted back in time 20 years or more, doesn't win 73 games. Maybe doesn't even appear to be the best team in basketball at many times. But I do think they're easily a playoff team at pretty much any point after the introduction of the 3-point line. Even without it they're competing for playoff spots, but without the extra value of the Splash Bros long shots they come down to earth a long way.
This works both ways, though. The best teams are defined not exclusively by transcendent talent, but also by the specific ability to dominate their league environment. If you put the 72-win bulls in the NBA right now they don't win 70+ games either. With the way fouls are being called now, Rodman gets marginalized too far, and he's the only rebounder on that team. Luc Longley and Bill Wennington aren't good enough rebounders for the current 3-point happy version of the NBA, and they can't step out to defend on the perimeter either. Could easily still be a 60+ win team, but not 70.