Seems to me the 'average' aura user might just be able to say, stop the bleeding of a superficial wound: think of it like the emergency medicine capabilities of an emt who can 'reset' a broken bone but then has to let the body do the job from there. Where as a true 'healer' would be more like a surgeon, sealing wounds and actually repairing skin/internal injuries with a significantly more efficient use of aura.

Just my thoughts.