WEBF - indeed , we do not speak a common language. Air combat requires at least two participants intent on shooting each other - the 'combat' you refer to is one-sided. Put simply - if the guy you are trying to shoot is not trying to shoot you then he is a target not a fighter.
The SHARS did not provide the outer layer of defence - the picket ships did.
The fusing issue was common to both sides and it was nothing to do with the air threat but entirely due to target defences.
The SHARS time on CAP precluded any realistic ability to defend against exocet attack.
Suggest you might have gained your knowledge from reading what other people wrote about the war. I did not and you can disbelieve what I write if you wish - that is your choice but I am now weary of uninformed opinion.