from the requirements posted on 20-21-921-56285814 I find that the total experience needed, including the 85 cmb(put the guy at 65 atk/str/def, 60 rng, 75 magic, 55 pray, 26 sum, 66 hp), is proximately 9.45m, only 2.55m short of a skill cape. Personally, I believe that the quest cape is better than some, but not all. IMO Rc, slayer, agility and farming, maybe con, would be more of an accomplishment than the quest cape while the others are either easily got by grinding or bought with cash which doesn't really show anything.