Insuber, have you tested the 109 for hearing the Merlin engine at all? I am curious as to if this also occurs. btw, I am not defending this bug, I am defending the implication that RAF pilots are cheating because they open the canopy to hear, not see. To suggest that 'the only explanation' for avoiding you is hearing the 109 is poor form. Most of my late breaks come from a squadron buddy telling me to break, canopy open or not, or are you also saying that the guy you are trying to shoot is definitely flying alone too?
I suggest to all 109 pilots who are complaining about this that they should fly higher and faster, approach from the sun blah blah you're making mistakes, blah blah, improve your shooting, blah, it's the pilot not the plane........