It's the gun that counts for me, where it's mounted doesn't matter much. I prefer the Browning .50cal because of its ballistics, range, rate of fire and hitting power, and then I fire in close where the lack of the explosive charge is less of a factor. I can hit almost anything in the F4U or FM-2 with its wing mounted Deuces, but stick me in a 109 and I can barely hit a target with a dead-6 shot with those guns.