Is that they are the nightmare team to play against if the game is close with the clock winding down in the fourth.
Games like that typically boil down to a lot of burning the block in the halfcourt.. Which isn't the strong suit of teams like the Suns or Mavericks.. Who are both excellent at the line but lack that "must-foul" post player and ultimately will end up jacking up a jump shot.
The Heat and Spurs have obvious issues since their go-to post players are questionable free throw shooters to say the least. The Pistons do have Rasheed, but more often than not it's "Mr. Big Shot" or Rip Hamilton with the ball in that situation.
The Rockets have a beefy center that shoots 60% from the field and 86% from the line.. and one of the most clutch players in the league right next to him.