Well.. you must consider this point of view.
IL2 is a Russian flight sim, made by Russian aeronautical engineers and software developers. Why on earth would they make the 'enemy' aircraft better than their own...
UNLESS .... they were better in some respects.
You can thank Oleg and the rest of his original team that they were not american, otherwise the P38/39/47/51.. B17/25/...etc would outfly the I153/I16..etc and the USA would have won all wars without trying -
Actually the USA lost every war the've started 
Getting back to the point... in Oleg's words about this sim.
"It's the pilot.. not the aircraft"
So.. stop complaining, get your act together... and start training 