How higher your skill level, how easier to get xp. Someone with a high xp total can only focus on the easiest skill, while the other train also skills not so easy to lvl : ie herblore, agility , runecrafting. Combat is easy to train and you get exp for att,def or str + hp exp. I have more respect for the person with a high skill total then for a high exp or cb lvl. I see regulary people with cb 120 + lower ranked and less exp then me. I for myself have cb 114 + total skill 1882