Hi 1K3,
>How did the Russian Mustang (MiG-3) perform against 109F during GPW in RL?
Not so well.
Its main strength was good speed, especially at altitude.
Its main weaknesses were its heavy weight (which harmed climb rate and manoeuvrabilit), its poor armament, and its bad handling qualitites.
The second ranking Soviet ace, Alexander Prokrishkin, heavily criticized the MiG, though he certainly was a pilot who know to exploit its strengths.
The MiG, though a great advance over the earlier Soviet fighters, was soon replaced by the Yak and LaGG fighters, and unlike with the Yak and the LaGG, no development of the MiG ever entered service. In fact, at one point the MiG OKB had to hand over research done for radial-engined variant to the Lavochkin OKB, which is a clear demonstration of distrust for the MiG airframe.
The Me 109F on the other hand outperformed the MiG-3 in most respects, and was a very well-handling aircraft wih no serious vices. An average pilot was much better off in the cockpit of the Messerschmitt than in that of the MiG.
Regards,
Henning (HoHun)