There are player tests that have proven that:
1. First hit gets kill, regardless of how meager the damage done. The test was conducted by a player that snuck an infantry into an airbase, and, using his pistol, pinged the tail of enemy planes. One shot, one shot only. He wound up getting 18 kills for that sortie. 18 Kills with a pistol! Sure, there were those that suggested that all 18 kills were the result of pilots crashing on take off, etc, but c'mon, 18 kills?
2. The old "park the tank behind the 109 test". Several clips of mg into aileron, lift off, fly around, nothing wrong, land, several cannon rounds into wing and tail, take off, fly around, nothing wrong, etc. They even posted screenies showing all the holes in the wings and tail that were created, and they categorically stated the 109 flew as if nothing happened. Sounds pretty seriously flawed, doesn't it?