Either his personality was too mild, or he feared confrontation.
Marvin Williams belonged to both categories.
Small O'Neal was just good at defending this type of player.
As for Al Horford, the "blind spot detector" at the five spot, he could hold his own and help defend, but he was not top-notch in either area.
Randolph was more afraid of those powerful, heavyset inside players, like Perkins.
Horford clearly wasn't that type, and Zach Randolph had no problem facing him.
Of course, the strength of the Hawks team also lay in:
Their bench had Jamal Crawford.
That was the main reason the Hawks ranked third in the Eastern Conference regular season.
Their offensive firepower was abundant.
The Heat Team was completely suppressed in a firefight and ultimately lost the series.
Rick Carlisle was well aware of this, so to win against the Hawks, either limit their firepower or unleash more ferocious firepower than them. He did not hesitate:
Bring up the Italian Cannon!
A firefight?