In HEAVEN SWORD & DRAGON SABRE, Cheung Mo Gei was unable to defeat the three Shaolin Elder Monks Do Geep, Do Ngan, and Do Ngak, despite the fact that his inner power and martial arts were far superior to theirs individually. Several factors played into this: the monks, although individually no match for Cheung Mo Gei, had a very effective fighting formation that Cheung Mo Gei could not penetrate. Second, Cheung Mo Gei fought them unarmed, which was not a good choice in light of the monks' expertise with soft weaponry. Third, of course, is the often-discussed idea that for all his tremendous inner power and considerable martial arts learning talent, Cheung Mo Gei lacked the refinement of skill and personal aggression necessary to overcome such high level opponents as the Shaolin Elders.
Gwok Jing and Yeung Gor had refinement and aggression in spades (relative to Cheung Mo Gei). How much better would either of them have performed against the Shaolin Elders? Both Gwok Jing and Yeung Gor's inner power were probably not weaker than Cheung Mo Gei's, and they had the edge on him in skill and refinement. Their skill sets and weaponry preferences also seem to favor them. Gwok Jing's Left/Right Hand Technique, Hong Lung 18 Palms, and ability to perform the Cheun Jen Sect's 7 Stars Big Dipper Formation probably would have served him very well against the Shaolin Elders. Yeung Gor's expertise in swordsmanship, his Heavy Iron Sword (it's been mooted that had Cheung Mo Gei fought those Shaolin Elders with the Heaven Sword or the Dragon Sabre, which were derived from the Heavy Iron Sword, he would have performed better against their soft weaponry), and his own expert knowledge of soft weaponry (Yeung Gor was the student of Little Dragon Girl, perhaps the all-time expert of soft weaponry), would have made him very well-prepared to deal with the Shaolin Elders as well.