Miami's offense is really basic in that all they really do is run isolation plays for James and Wade. Bosh gets some garbage and can also hit mid range jumpers and usually goes hot or cold. Their spot up three point shooters (Bibby/Miller/Chalmers) are for the most part old and/or ineffective. They don't have much beef at all in the front court.
Chicago plays such great team defense that these isolation plays won't succeed like they did against a slower, less effective defense. The Bulls' defensive strength plays to Miami's offensive strength. In the playoffs the Heat increased their pick-and-roll plays from 11%-to-19%, but that was largely missing yesterday. They will have to figure a way to get that working to improve.
All the talking heads were falling all over themselves about how great Miami was, but even against the Celtics playing without Rondo, the Heat won two games in the last minute. The Bulls are MUCH superior on defense.
The Bulls won't always be as effective on offense as they were last night with their role players, but I think it is much easier to win championships and a series with ONE great player, TWO good players, and SEVEN role players that excel and complement each other.
The Heat are trying to win with TWO great players, ONE good player, TWO role players, and FIVE guys that wouldn't have a shot at making the roster of the Bulls, Thunder or Mavericks.