I think the simple fact is that there was no developed ACM in the Falklands war so impossible to compare the two jets really.
Unescorted bomb trucks versus CAP, even if the GCI has limited picture and the jets a poor look down system, should realistically be a fairly one sided event.
Might we allow ourselves to wonder what would have happened if the opening strikes on Stanley and Goose Green by Sea Harriers had been pounced upon from above by 9L toting A-4s?