Collisions must damage both planes. That's the only fair way to insure both planes give each other wide berth.
I went looking for this thread because over the last two days I've been getting hit right and left and I always seem to tumble in a big mess to the ground while the other guy flies away unscathed. The first couple of times were mutal HOs, but after that, getting tired of flying to bases only to be rammed, I started breaking off, diving and generally trying to avoid the other guy who continued flying right at me.
Guess what, despite what I did to avoid rams, they continued to happen.
Today I'm flying around, chasing an LA when a mossie decides to come to his aid. He approaches me at 3 oclock. I continue flying straight. Bam, rammed in the tail. Now on his front end he might have just flown by me and missed, but on my front end, my reality, I had ample room to avoid him. Nothing I could have done in that situation, short of bailing out, could have avoided that collision. I got a "xx has collided with you" message, but he kept flying on unscathed while I headed down to play with the gophers.
People might not want to hear that the damage model is messed up, but it is. it's that simple. That's why this horse keeps getting beaten. When things work in a fair and reasonable manner, horses are free to roam.