Dawnbreaker has an mAA on both sides but the heli can still farm. Why is that? It's only like that if the heli crew is good enough. Same on siege, pilot needs to know what he is doing or he will die to stingers very quickly. Games where good players cant play well are games that people dont want to play, because then there is no incentive to play or improve in the first place.
Same is on Dawnbreaker 8v8, the team that has the better heli will also tend to win the map, it's the game's reward for being better than your enemies.