Apparently, if you are going to shoot with a gun in each hand, you should fire simultaneously. Still, that puts firing two guns at the “as effective as” one gun point, using twice the ammo.
But I have a methodology question. They are taking their number of points and dividing it by the time it took. When not firing simultaneously, shouldn’t it take twice as long? One shot at a time, with two guns, should take twice as long as one gun, or simultaneous fire with two guns.
So is it really less effective? Or does it just take longer?