I'm thinking that one of Khârn's overlooked advantages in melee is that he is left handed. When i was training with a fellow member of the local Viking re-enactors he explained to me and displayed, that a left handed opponent can really put you off balance. Right handed fighters are not used to blocking blows coming from the right, at least not with such reach and strength as a leftie could bring. also it makes it more awkward to use a shield, because you're riposte will be slowed by having to bring it so far right, which you wouldn't do in any case, it being such a slow and awkward move all round. So a rightie, meeting an experienced leftie for the first time is immeadietly put on the defensive.