I have a theory on the FT disparity. Miami is a more physical team, they drive to the basket more and draw more contact. Boston is more finesse so it's harder for them to draw fouls. Other cases can be made about FT disparity, like Kings vs. Lakers a long time ago, but in this case alone I that's how I see it. Especially Lebron making constant effort driving to the basket. The only way the Celts got to the basket was through pick n rolls.