Weapons, hit points and armor are not the only things that affect the outcome of combat. Here you can see what happens when fighters try to attack a frigate with turrets. The first fighter group uses aggressive attack mode while the other one uses evasive attack mode. In defence of the underachieving frigate, it does not yet have a proper AI to deal with many fighters, instead it tries to shoot them one by one and turn to face the current target. That makes it rotate wildly, which does not help targeting.