Anything over 10 is obviously beyond human but in Fallout there are a lot of things that are more than human.
Real world example, Dogs can smell 100,000 times better than humans.
I was only suggesting that if everyone and every thing used Special, then a lot of mechanics be easier to setup and if someone managed to get over 10 in a special due to drugs or cyberware then it could be recognized and used in the game.
If Power Armor boosts the wearer's strength then why won't it boost an Olympic level weight lifter's strength.
I've spent a lot of years as a Shadowrun GM so I understand game balance.
Usually the result of either poor mechanics or poor interpretation of the mechanics.
Often not help when the game designers refuse to clarify a vague paragraph.
A game with good mechanics brings the game world alive and makes maintaining game balance very easy.
I can see that this is maybe not a can of worms they want to open without building it in to the game engine from the ground up, but I do think that if everything had special stats it would make the world more alive.
Example in Skyrim. It would be nice to know how perceptive a guard is, or how agile a thief running away is, or how intelligence the gatekeeper is and have it in a form that you can compare to yourself.