(Most) PCs are superhuman because of their class not ability scores. A level 1 fighter knows weapons combat better than 99% of his village.
A farmer with 18 STR is still a Normie. He can't go hunt goblins. But almost every fighter can own a goblin. Any character without the STR CON and DEX to fight will most likely not be a fighter. Ability score attract characters to super heroism but the training of class and level make them superheroic.
That being said, their would be some sort of culture in humanity. Perhaps a simple Civilized and Barbaric split.
A farmer with 18 STR is still a Normie. He can't go hunt goblins. But almost every fighter can own a goblin. Any character without the STR CON and DEX to fight will most likely not be a fighter. Ability score attract characters to super heroism but the training of class and level make them superheroic.
That being said, their would be some sort of culture in humanity. Perhaps a simple Civilized and Barbaric split.