You are aware the collision system is designed to penalize the plane that could have avoided the collision, not the one who is rammed. This is determined by which FE is looking at the other plane.
An example is the straignt up the tail ram. The plane that flys into the tail of the enemy plane dies, the plane in front flies merrily away. The plane that flew into the enmy tail could have avoided the ram, so he get's penalized.
I think this is a good system, otherwise we'd have a sky full of suicide dweebs ramming everything.