While I admit I have limited fighter experience, I do know bombers. I admit the 20mm in the tail may pose some problems, and more than the 20mm in the Ki-67, but it is not an insurmountable problem. I have first hand experience that no matter how you gun, fighters will shoot you down. Oh, you may kill more attackers some days then others, but when I get jumped by 4 or more, I rarely make it back to friendly air cover. It maybe that my gunning sucks, and I need to improve as not to be an easy kill. But based on what I see when I fly with other bombers, my gunning is average, better than about half, worse than about half as well.
But this is not the thread to put this in. As you have booed my original thread topic, then LET IT DIE. I see no reason to keep something you all are so vehemently opposed to alive.