i have noticed, that octos are more touchy feely, where as cuttles are more observative, for proublem solving, i would side with octo's, with decision making i would go with cuttles, with communication i would go with cuttles, both have shown to comprehend there reflection to some degree. i have noticed that when i put my finger in the cuttle net, the cuttle with observe it for a while, then touch it, whereas when i had my octo it would go right to it. but total IQ, i would have to go with the octo, maily because of its problem solving abilities, almost like an autistic individual, verry intelegent machenicaly, but lacking social knoledge. where as a cuttle is more like a moderatly smart socialite.