It was initially believed that Gwok Jing was unable to learn the martial arts of the Gong Nam 7 Freaks because he was an incompetent martial artist. Ma Yuk later revealed that the fault lay not with Gwok Jing for being untalented (he wasn't), but with the Freaks for being ineffective teachers. It was the Freaks' unwise attempt to simultaneously teach Gwok Jing seven very different (and often outright contradictory) styles of martial arts as his foundation that gave him difficulties. Certainly, Gwok Jing showed his penchant for learning martial arts when he later learned and mastered much more sophisticated techniques such as Cheun Jen Sect inner power, Hong Lung 18 Palms, Left/Right Hand Technique, 9 Yum Jen Ging, and Peach Blossom Island martial arts.
So let's give the Freaks a different student: say a very young Yeung Gor or a very young Wong Yung and train them under the same conditions that the Freaks trained Gwok Jing. Will there be a significant difference in the outcome given the Freaks' martial arts and training methods?