I used to shrug this off, but I'm glad it has been brought up.
Somewhere, there must be some formula HTC used to devise the "signature" of each plane. One can only surmise it was developed by some sort of "volume" measurement. They proably dipped the entire plane into one big bathtub and whatever was the amount of water that was displaced was converted ino a score and assigned to the aircraft.
Take that score, throw in a speed factor, a pitch factor, and distance from the gun factor... and *poof* there is a formula.
I bet the differences are large enough for our Mossi, Destroyer, and Lighting pilots to think far more thoroughly about diving through the ack on an attack run than if they were in a ever so slightly smaller aircraft (please reference single engine fighters). I'd also be willing to bet that the amount of hits scored vs one of the 3 said aircraft are disproportionately higher than they should be or actually were in the real deal (WWII). If we take a Mossi, dive it through ack under as close to exactly circumstances vs a Fw190F-8, any bets on which aircaft takes more hits? Any bets on how much faster the Mossi has to travel though the ack to receive the same number of hits as the Fw190F-8?
I know I dont take the Mossi anywhere near ack unless I'm 400mph+ and able to stay low and extend using the terrain as cover (another gaming the game tactic, really).
Whatever the formula is, I too think it needs to be adjusted a wee bit in favor of the larger planes. I dont think anyone believes those larger built planes deserve the same scoring, but it does seem as if those larger planes are getting ack raped a bit worse on average than in relation to their small jump in size over the smaller single engine fighters.