User blog comment:Grahinjul/STORMCLOAKS v.s IMPERIALS/@comment-9062114-20130725195341/@comment-9062114-20130804055103

Again, that's more a reaosn that he should've been king. He was clearly the superior combatent. High King's lead armies in Skyrim and fight along side their Shield Brothers & Sisters. So combat skills is something you should know, which Ulfric clearly does.