It might get lopsided.
The Spurs haven't beaten Miami since March 2011, and that season the two teams traded 30 point wins over a ten-day period. Last year, on the way to the NBA Title, the Heat cranked the Spurs by 22 in their lone meeting. So don't be surprised to see a blowout or two. Moreover, these are two of the top five scoring teams in the regular season - they can put up points in a flash.