Dave Cowens was a very hard worker and a decent passer.
But the best team of all time was the 66-67 Sixers that won 68 games in the regular season and eliminated the Celtics team that won 60 games in the same season. With Russell at Center the Celts lost in 5 games.
Most of you are too young to remmember these guys, but Wilt Chamberlain was in his prime, and they had Chet Walker, Luke Jackson, Hal Greer, Wally Jones and Billy Cunningham as their sixth man.
There hasn't been a team before or since that could beat that team.