Swap pilots and see how it works out, I would also suggest that you would have to compare generations of aircraft against each other as there is little point in trying to compare a Mig-21 with an F-16.

I would suggest that Russian weapons systems of comparable age are fairly similar to Western systems and they would become even closer in comparison when used by crews of equal quality.

Where America tops the Russians is on their electronic warfare systems on their fighters which give them the edge