C. 5 x F35B vs 5 x SU 27.... Who wins?
It's scenario-dependent. If the F-35s detect, track, ID and get within a high Pk launch envelope before they are detected themselves, it's a bad day for the Su-27s. But if all you've got is AMRAAM, which is all you've got if you're stealthy, and even a couple of the Sus survive to the merge...