The problem is the determination of who did the colliding on BOTH front ends.
If it says THEY collide with YOU they ARE supposed to take damage. HOWEVER, several times I've seen "So-and-so has collided with you" (most recently my last sortie tonight, a P-51 pork/ho dweeb) but while my engine dies or I lose a wing or some other important bit, he flies merrily on his way.
I think it's been determined there's a lag issue involved. It says he collided with you on your FE, but HIS FE doesn't register it.
The BEST solution would be to just have both take damage. No complaining about the ram dweebs getting off scott free that way.
Although personally I'd prefer to see determination of who gets the kill fixed LONG before rams (***Steaming over the effectively intact, NOT-smoking, NO missing pieces Mosquito he shot the holy hell out of and lit on fire, but STILL only got an assist for***).