[VBprogrammer]

I think you have to be careful about assuming the US would have air superiority. It doesn't take a lot for what, on paper, looks like a superior air force to turn out to be not fit for purpose.

The famous example is the F4 Phantom getting beat in dogfights against the Mig 21 in Vietnam. It was mostly solved by changing the tactics and to improvements to later model aircraft.

Obviously dogfights aren't realistic in the modern age but that is just one of many variables which might lead to an unexpected deficit. Robustness, reliability, repairability, availablity of parts, ability to operate out of unimproved airfields, using poor qualify fuels etc.