Air Superiority is not primary. Decapitation of SEAD/DEAD/Comms is. That means packaged discretionary strikes.This may be the case for the USAF (and to an extent for everyone) but any user who will be utilizeing the platform in the day one air superiority role to achieve battlespace wide air dominance will need 6 AAM's on the first day. I dare say so will the USN. Therefore 4 internal AAM's is rather limited.
The biggles events don't happen in sophisticated modern combat.
Everyone learnt that lesson and panicked on fast tracking their own RMA after 1991