That's right, through the Years we've seen a lot of superstars with great teams but no rings. Playoffs game most of the time are close, and it comes to the final minute needing a design play from the coach. Or helping players that are above average play like superstars.
The guy had SUPERSTARS all the time, but when you have this kinds of Stars, SUPEREGOS come to place and you have to know how to handle them.
Other thing that comes to mind are teams like Utah with Karl Malone and John Stockton, Charles Barkley with the Suns, Lebron with the Cavs. Superstars, great teams no rings. And I'll go a little farther and put the Boston Celtics in the mix, after the first year of the "Big Three" or Four [Depending how you look at it] we thought they were going to have multiple championships, that didn't happen; I would never blame the coach for that, but sometimes superstars won't get you a automatic ring, people tend to overlooked the coach and the bench players when you win.