Care to explain why?
The scenario was something like Millsap getts the inbound with 6.9 left. Millsap stepped out to the 3 point line with around 4.5 sec left. That's when you foul in this scenario.
Millsap hits both, ATL is +1. Pacers will try to intercept inbound but have to foul right away if it fails. ATL getts free throws with 4 sec left. Whoever they wanted to get the ball to getts 2 shots and misses both. Clock starts ticking, Pacers get the rebound with 3.5 left and now they have to get the ball up front as far as possible and send a prayer from midcourt most likely. That's a way worse shot than most systems you can run for good looks on an inbound play with 7 secs left.
That's how I'd do it. And I bet I'd be right in 90% of the time with that decision. If you go for defense and give up a better shot you have overtime in at least 25% of the scenarios.