Miami won Championships with a swarming defense and an uptempo playstyle. Dallas relied a lot on the 3point shots. Spurs put on a passing clinic. There are many different ways to reach the ultimate goal in the NBA.
And that's true; it's also true that those teams won championships running an offense that played to the strengths of their best player. Raise your hand if you really believe that a running offense plays to the strengths of DeMarcus Cousins?