Okay. Let's use your game theory logic, since you've studied it:
You're up three with 30 seconds to go against a team that has several good three point shooters. They have the ball.
Three and a foul is a fluke play, statistically unlikely, but I'll give it to you.
The worst possible outcome is to give up a three and a foul. The next worst outcome is to give up a three. You avoid both of those by fouling the dribbler when he catches the inbound pass before he shoots. Barring flukes, worst case is they hit two free throws and you get the ball back up one with the shot clock off.
When you play defense, you take NONE of the outcomes away, good or bad. Pop plays defense in that scenario 100 percent of the time, whether the other team has good shooters or not, whether at home or in the road, whether the other team got the rebound or is coming from a time out.
Game theory says Pop is playing Candyland, not chess.