Ay, we're not refuting that he is a great player, but even with the all-stars, the Celtics still played together as a team. Take the more recent edition of the U.S. Basketball Team, and their embarrassing loss to Argentina and Puerto-Rico, etc. Now, take the 1992 edition of the U.S. Basketball Team - they had Larry Bird, Magic Johnson, Michael Jordan, Charles Barkley, Karl Malone, etc. It's undisputed that they played team ball. As for the recent edition, they had the statistically defined all stars, however, they did not play team ball, and subsequently lost games.
This also parallels with the 1992 edition of the U.S. Basketball Team and the Celts - although they had all stars, they played team ball that was much more fundamentally sound than the Lakers. Even the Celts' bench was deep, in which they weren't technically defined as statistical all stars - they still produced the same results as the starting line up, which consisted of their all stars.
Kobe only made "something out of nothing" when he began to play team ball. LeBron had somewhat of a supporting cast, and Jordan didn't win his first (out of six) championships until he got a supporting cast, which turned them into all stars. Even as the Bulls progressed into greatness (and, you know that they are the greatest, lol), Pip, Kerr, Armstrong, Paxon, Rodman, et al were essentially (all) stars in the League's eyes. Even after that star transformation, they still played team ball and won six titles.