I don’t have an answer to your question.
How many hours do active Russian pilots get for training, how much of it is combat training? How familiar are Russian pilots with their air frames? How updated are the recalled pilots in Russia? How many hours a month do ‘reservists’ fly in Russia?
The Ukrainians will be fighting against Russian pilots, over Ukrainian territory. I suspect that some of the Russian pilots are amazing, some probably many not so much or ‘recalled’ with little recent flight time.
I think the SAM’s are probably a bigger problem. They have proven to be quite lethal for aircraft over Ukraine.
A wasted effort unless an expanded war is the aim. Not surprisingly Biden and Zelensky and their handlers need it.