Hi
This point, Don, is more problematical from both a gaming situation AND where I have done presentations for pilots on this. Well, ignoring the roll rate problems, of course.
The situation is that "The First Team" pre-WW2 trained Navy and Marine pilots where pretty much the only ones actually given formal training in deflection shooting. A number of successful pilots who had experiences as bird or skeet shooters had an advantage, but largely a pilot had to survive AND figure out lead on his own to make this work.
And the advantage of the yo-yo over this snap deflection is time on target and follow up shots. That is, anticipating the turn, rolling, degree of arc and all, the shot is likely to be very short with a follow up requiring either following up with a yo-yo ore disengaging and re-engaging the target.
In the Battle of Britain, the british designed their gun systems on having a 3 second burst on target to bring down a bomber. In addition to underestimating how many actual hits would happen they underestimated how much damage something like a DO17 could take. And they didn't train for deflection.
The P36, aka Hawk 75 had a similar performance envelope with the Pratt and Whitney twin row motor to a Zeke. Actually better as its performance in roll and dive was actually superior. But the french often having only 2 x 7.7s and rarely 6 put them at a severe disadvantage even though they would "win" the dogfight. And the reverse, experienced Germans often used the yo-yo, but from the E-3 on with the cannon, even a snap shot high deflection could do a "win" for the germans who were otherwise outmaneuvered.
I hope this going on and on isn't glazing people's eyes.
My old day job stuff, and I get all geeky.
Rocky