US and UK soldiers have a lot more battle experience given the last 11 years.
That's perhaps true when bombing ground targets but not with fighting other planes. I was also referring to the plane itself and not the pilots.
In regards to warfare on the ground, Russia has a lot of experience with Chechnya as well as when when they invaded a part of a Georgia. But yes, western experience is still probably higher with a more professional army and better trained soldiers instead of conscripts like Russia.