Heron explains how they won. One point to understand about the trials is that the AI is teaching itself to fight, it's not following specific maneuvers programmed by people.
Another point is that there was no shoot now decision, if the bandit was in the gun cone it took damage.
Also, you might notice in the first video above that the aircraft are shown hugely oversize so that the aircraft attitudes are obvious in the videos when zoomed out enough to see the turn circles, this makes the turn circles look tiny and the speeds look slow in the video.
