Sorry I'm a bit late to the conversation. Found this on Youtube recently. The answer to the question of the title is obviously 'no', but as he says, that's not what they're trying to do. Summary: it was normal for B-24s to strafe U-boats with their machine guns before attacking them with bombs or depth charges in order to suppress return fire from the U-boats AA guns. Rounds on target from the 4x 0.303 guns and 4 x 20mm cannon of a Mosquito FBVI would, I imagine have a similar effect, allowing a subsequent bomb or rocket attack to be met with no return fire.
Maybe if the AA guns were modelled as independent guns that happen to be located on a moving vessel, rather than being part of the vessel, that would work better? I'm not a programmer, so no idea how hard it would be to do that.
