In the real world both parties to an aerial collision would receive some kind of damage. The laws governing physical objects colliding at speed and kinetic energy are in force and don't care about the two parties motivations.
In the game our client controls and communicates seeing your rounds hitting your con. It also controls seeing your aircraft colliding with another, then damaging your aircraft as the consequence of not avoiding colliding with that con. Then communicating to that con your aircraft has been damaged or destroyed as the cost of not avoiding colliding with that aircraft.
It's a motivational control for your conduct. Sucks in its reasoning but, in practice, keeps us leery of colliding on purpose.
If you dislike being HO'd by the majority of players you run into in the MA. Both parties dying from collisions would kill this game. New players would drive the arena nutz during their first months just learning to fly and fight. Every small minded backstabber with an ax to grind would ram everyone they meet instead of HOing like they do today. When they decided your ACM has to get knocked down a notch to sooth their hurt pride and feed their ego. Then they would have a face full of kamikaze love to screw you with.
If you get a collision message, then just like your game client tells your con to go boom and you are awarded a kill message. Your game client awards you a broken airplane and a collision message for not avoiding touching the con. In our game it's fine to shoot the red guys. It's a BIG no, no to touch them.
So now that we all know how the collision process works. Are some of you thinking about going to kindergarten over it?