Note the bolded text. Jin Yong wrote that Dugu Qiubai used DG9J to fight various warriors. As we all know, Mr. Dugu retired AFTER no one could take him on. So that means DGQB has been using DG9J even before retiring. Now look below:Feng Qingyang explained, “This stance is used to overcome opponents who have great inner energy. The essence of the move really depends on your own interpretation. When senior master Dugu took on the entire Martial World with this set of Dugu Nine Swords many years ago, he couldn’t even find a single person that could defeat him, that was all because he had reached the acme of perfection with the set of sword techniques. The same sword technique from the same Huashan style sword art could have very different effect and power. It’s the same with the Dugu Nine Swords. Even though you have learned the sword techniques, if you can’t perfect your skills, you would still be no match for first-class elite fighters in today’s world. You have already entered the field. If you prefer to win than lose, go practice hard for another twenty years, then you will be capable of competing with the key players in the world.”
Jin Yong said that LHC's swordplay is better than that of Yang Guo's but could he have mistaken in that interview? He said "simplicity brings superiority" in ROCH. DG9J is nowhere near simple. It is really complicated and requires A LOT of memorizing.“Heavy sword with blunt edges, simplicity brings superiority. Before I reached the age of forty, I used it to roam the entire world under Heaven.”
So could we conclude that DG9J was used by DGQB BEFORE the Heavy Iron Sword? And hence HIS>DG9J? And hence YG's sword>LHC's sword?