nope that is not the case, read my postings back. I had the same this weekend flying a German DFW 2seater. The gunner AI is programmed defencive and not offensive.
So still stands,
a commando key to give the gunner a command he can act also offensive to the nearest enemy plane 
Actually it's not programmed "defensive" but it will not fire at it's own tail or wires or wings etc, or when being sick from too much aircraft movement and so on.
If flying a Fee and approching a German eindecker headon in a QC mission, he is not shooting with his front gun, here No wings, no wires and he can not be sick, only the pilot because of this.
