It's worth noting that the top scoring allied ace flew La-7s. Ivan Nikitovich Kozhedub, with 62 kills. A 262 and 2 P-51s among them.
It's also worth noting that while Russian designs are absolutely frill-free, they are universally robust, simple and effective. The MiG-15-17-19-21 demonstrated this convincingly in Korea and again in Vietnam. The MiG-29 and Sukhoi-27 gave the west an unpleasant surprise when the Cold War ended, and let us not forget who pioneered Pugachev's Cobra maneuver. In other areas, the T-34 is STILL IN SERVICE in Africa. The AK-47 speaks for itself. There has never been anything wrong with Russian engineering.
I actually am not one bit hung up on the historical accuracy question, but as Karnak has pointed out, you have a tiny, stripped airplane with the bare minimum of fuel, weapons and ammo required to get it up and fighting, built around 1800 horsepower. It doesn't take a rocket scientist to know it's going to move.