Check speed and climb rates along with manueverability. Then try looping both. I'd call the twin Yank 0.50s "unused" instead of "useless". Either way its better then a single 12.7 UB on an IL2s rear end. Ive shot planes down with the IL2s top turret MG. And if you need more then 8 0.50s in noseguns to shoot down an enemy you got problems. Its by far the better attacker/medium bomber if your intent is to engage enemy airplanes. Of course the IL2 is not even in the bomber hangar anymore, with F3, cause, cause, cause why ?
Cause its such an outstanding fighter plane?
My point wasn't about the speed or maneuverability of the A-20 over the IL2, it was to point out that your comparison of the firepower between the A-20G and the IL2 was incorrect. By claiming the A-20G was "Death Star" you are inferring that it has greater firepower than the IL2, which it doesn't. The foward firepower of the Il2 is far more powerful than that of the A-20G, in either IL2 load outs. So, the analogy that you used to compare the firepower between both planes was incorrect.
As for the turret in the A-20G, use it is useless which is why it's "under used". Because of the size of the tail on the Havoc, it's basically useless for rear defense and all one needs to do to avoid the top turret in the A-20G is to approach from a slightly lower angle in the dead six position. The turret can't deflect low enough to get a shot and if one knows how to properly engage bombers, the top turret isn't a threat at all when attacking from above. In a maneuvering fight, the turret is only good enough to provide a distraction for the bandit and as long as the fight does not turn into a Lufberry, the bandit can stay out of the cone of fire.
If you want to get technical, the IL2 was designed as a ground attack plane and not as a bomber. Which could be the reason why it's no longer able to be scored as a bomber. When I first started, I also seem to recall the same issue with the Bf110 being able to be scored as a bomber as well but was later changed to just fighter and attack.
So in short...IL2 firepower > A-20G firepower
ack-ack