You know, when you said you used the 4-gun pony, I thought I outta try it out. But, I cannot detect any significant improvement in the handling of the aircraft. It is just a *pinch* faster.
The main point to make here is this: with the 4 guns, you arent going to be able to outturn any planes you would with a 6-gun. Maybe it rolls a bit better, or corners a bit better - but nothing that makes me wanna give up 2 guns.
Plus, the ammo loadout is virtually identical, so you dont save any weight.
What about the P-38 light 4 guns, now that is something that I think performs markedly better (1200 less 50cal rounds)!
Nimitz