the key to miami was Gary Payton.
When Wade went out 2nd quarter and Shaq was out too, there was a 5 min. window where Miami was only up 2, and they had to hold that lead until halftime, with their two superstar scorers in foul trouble.
Payton not only scored on drives and floaters, but he played awesome defense. Miamis team defense as a whole, rotating to defend the perimeter, was awesome for them. They didnt allow many open looks for 3 from Detroit, and prevented them from getting paints in the paint at the same time.