http://www.basketball-reference.com/blog/?p=8159
Is this what you were looking at?
"In the NBA, dominating good teams is clearly the best indicator of postseason success."
Soap pointed it out.
In general, Final Four (postseason) success is best predicted by:
1. Blowing out Good teams
2. Blowing out Bad teams
3. Winning close vs. Good teams
4. Winning close vs. bad teams
'losing close vs. good teams' not really having much bearing compared to the above 4.
However, the above generalization does not take into account the possibility of specific matchups in which one team can consistently exploit an achilles heal of the other; in Miami's case, this year, it could turn out to be size mismatch's; we all will be rooting for this to be the case!