Besides, Sun Tzu states in the <Art of War>, "Know yourself and know your enemy, and one will never be imperiled in any battle".
The lies and falsifications are prepared for people outside the warmachine to read. They may try fool others, maybe even their superiors, but a military waging war never lies to itself. Even as Hitler's mental state soared towards Andromeda, his military specialists knew exactly what their odds were, and what was happening to them. There is always a disparity in perception between the at-the-scene specialists, and the bureaucrats above them. Nothing was different with the Soviets, nor any other WW2 faction as for that matter. And where the experts are, there is always data to be recovered. Some may hold the entire deal, others may hold crucial bits and pieces to add up, but there is always a starting point.
Therefore, belittling Soviet airpower or aircraft, like anything else, must also start from those pieces of truth - not from loose and irresponsible generalizations coming from frivolous impressions and superficial knowledge about a country which one has no real understanding of how its system works, and taken out of context in an ill-mannered way.
In otherwords,
"Unless you have some definitive proof of just how much the specs have been bluffed up, and have compelling info on how it really should be, stop the crappy generalizations and just shut up."