I don't know. From what I've seen so far it's a matter of storytelling. The first decision wasn't even a pin or anything. It was a DQ and the weapons plays to the monster side of Brock.
It was actually pretty clever storytelling. Brock throws away a fall so he could wear Angle down with a chair and easily get a pin and keep Angle down for the rest.
Maybe I'm just big on telling a story.
I don't understand your gripe about the amount of falls. It made for more excitement if Angle has to come back and it plays to Brock's strategy.
Who says it has to be 2-3? Like I said before it plays to Brock's monster side.