Who has Dallas played this post season with Miami's defense?

This is the difference between west and east basketball, the West are just primary on scoring while the East play great D. The Thunder has the best Defense in the West and still they can't compare to teams like Miami, Chicago or Boston.Do people for get that the Heat played good enough D to stop Nowitzki and Terry back in '06? Imagine now with Lebron. The Mavericks can't handle the Heats defense plain and simple.