In principle, it is plausible to assume that the Soviets could spread the losses over different days post facto, so that they would not be too high on one day. Have you encountered such a situation? I suppose such falsifications are unlikely because they are extremely difficult technically - you need to falsify a number of minor documents with different people's signatures.understanding of Soviet losses
In fact, there were cases when losses of Soviet airplanes from enemy fighter attacks were recorded in Soviet documents, but there were no Luftwaffe pilots' claims for them. Of course, friendly fire is also very probable, but Soviet fighters did not claim them either. The incidents from 1941 (Su-2s were shot down) are apparently a consequence of chaos after the shock of gigantic losses.