character wise, guo jing was the strongest, in that he had the least self doubts. he was confused often, but he learned from his expirences and often was able to make sound decisions without hesitation.
yang guo was smart and honarable, he was weird but did not have much self doubt. when he made a decision, he stuck by it. he was a bit obsessed with XLN but not overly. he found his own way to be a hero through he initially did not want to be involved in the war.
ZWJ had a sense of right and wrong but he often found his heart was not in all the task before him. he wanted to serve his people, but found the duty of cult chief conflicting with his desires. he had ability but i think he was happier as a physician then a sect/cult leader. he did not have ambitions and had a great deal of self-doubt. pontentially, he was the most likely to achieve the most but had the most self-doubt and least desire to achieve it.