Person A is verbally precocious but mathematically unremarkable; Person B is mathematically precocious but verbally unremarkable; Person C is mediocre both verbally and mathematically, but exerts that intuitive grasp of trajectory commonly associated with a professional pool-player: all three have registered I.Q.s of 140.
Tell me; who is the more intelligent?
Intelligence is a notional abstract, and quintessentially intangible. Thus, we variously impute certain attributes quite arbitrarily to a hallmark conception of what constitutes intelligence, without ever truly encompassing it. Whether or not an emeritus professor in Renaissance Philosophy is more intelligent per se than the President of M.E.N.S.A. International, or even your perennial dustbin-man, is irrelevant: chances are that the professor will during his life-time accomplish more of lasting consequence, albeit only within the parameters of his field, than either of the latter. Unless, of course, you happen to be a member of M.E.N.S.A.; or inhabit a certain suburb. In fact, I would go on to assert that 'intelligence' doesn't exist per se, at all.