When Gwok Jing was sixteen years old and living in Mongolia, there was little indication that he was destined for martial arts greatness. His teachers, the Gong Nam 7 Freaks, themselves not elite fighters in the world of LOCH (at least not relative to the Greats), didn't have much hope for him to amount to much as a martial artist. It wasn't until Ma Yuk went to Mongolia and began training Gwok Jing in the basics of inner power that Gwok Jing's latent martial arts talent began to emerge.
Gwok Jing's eldest daughter, Gwok Fu, never blossomed as a martial artist at all. She didn't have her father's martial arts talent, although she did (potentially) have access to a huge selection of skills to learn from as a result of her associations.
But if sixteen-year old Gwok Jing were to catapult ahead some two decades in time to fight his sixteen-year old daughter (and they'll have no idea who each other is, so don't worry about family loyalties/holding back), who would win that fight? Was Gwok Fu at sixteen already a better fighter than her father was at sixteen, despite her lack of significant further progress and his later development into a Great?