The apprentices he has mentored in the past often argue against this, saying he isn't serious all around. While it is true to an extent, he really only prefers to not mess around during duties around the clan.
He is often considered the 'unfun warrior' by most of the younger cats, especially apprentices and kits.
While he may be fit for leading, he often refuses it. Besides this, he is a calm and understanding tom with recognizable leadership skills. It would be safe to say that he is analytical in other aspects, often being a thoughtful, though sometimes critical, warrior.
Ravenfang is a tactician, being very skilled at the art of fighting and wars.