With a big summer of free agency coming up the need to land a superstar is paramount if a team wants to win an NBA Championship. If you go back and look at the last 30 years of NBA Champions, what you will see is that nearly every champion had at least one superstar. I'm not talking about all-stars, but superstars like Bird, Magic, Kareem, Duncan, Shaq and Kobe, Jordan, Hakeem, Wade, Garnett and Pierce, Thomas, Doc and Moses . The only exception I can think of is the 2004 Pistons who had only one all-star in Ben Wallace, but had a host of great players and beat a superstar laden Lakers team.
Superstars take over games and also get the benefits of calls from the refs. They also make their teammates better either through their contaigous will to win or by commanding defenses to concentrate on stopping them leaving other players open.
While its true you can be a good competitive team without a true superstar, its difficult to win an NBA championship without one. Here'e hoping that the Clippers land a superstar in free agency or that Blake eventually becomes one.