OK then, what is the real answer that you are looking for?
Two great flyers that had true feelings for their cohorts.
Knowing that, which one do you want to kill the other?
Please tell me the whole notion is starting to sink in.
Changed my mind. If it's a certain time of the month then I choose Lydia every time, on the basis that I have learnt never to argue with my wife at those sensitive times.
One thing that marks all aces out apart from their count of victories is their ability to survive. At the peak of their game in evenly matched planes I don't think many top aces would get a shot on another unless a head on.
You're putting a 12 victory 66 combat sortie Ace against a ace that would eventually fly 1404 combat sorties and and get to 352 victories.
WHY ?
Then put Hartmann in a variant of the Bf-109 he never flew in combat, by the time Hartmann got to the front the Luftwaffe was flying the G models of the 109.
With out some parameters I'm puzzled why the question is even asked .