Dan,
Hold on just a second. I said the best team I saw Miami put on the court was the above team. That says NOTHING about the effectiveness of Shaquille O'Neal. Granted, in the game, he didn't look good. However, with different sets and a different style of play, I believe Miami - with Shaq - can be better than what it showed with him on the court the other night.
Shaq's effectiveness is down, but it's not down MUCH with regards to what he can do for a team. But Miami has to commit to using him in that manner. Mourning doesn't require the same commitment, but doesn't provide the sheer dominance, either. But Miami's entire defense is going to have to be re-worked to make Shaq effective.