Have noticed several instances of the AI running away from contact IF you punch enough rounds down range to suppress them initially and then keep the rate of fire relatively high. However they tend to start calling in IDF and reinforcements a little quicker in those instances because they think you are a heavier group than them.
I watched one of our small patrols do that in our ALiVE deployment (they were a 4 man patrol) and each person dumped probably 3-5 mags or 2-3 belts of RPK ammo with the intent of forcing the AI into suppression on my requests...they were then overwhelmed by the response they recieved about 5 minutes later from the AI.