I like Akulion's line: "no one is above another except in piety"
That consolidates consideration of Ansar's post certainly.
However in the considerations generally of why any person wants to portray any GROUP as more intelligent than any other we certainly need to be working against racial difference ever being a defining factor in considering intelligence. In fact, I could argue that we need bear in mind that every single biological difference is a mark only a life sustaining and intelligent feature. To fault any aspect of any person's biology as though caused by any thing not sustaining to life is blatantly only a fall to the means of The Dajjal. Even a disabled person could turn out to have been hindered from manifesting any Human form without a disablity in it, so the very disablity becomes life sustaining.
We could attempt to measure two discrete forms of intelligence. That of self, and that of Soul and spirit. There exist differences in the absolute capacity for intelligence between the four types of Soul existant at Earth, which are: Jinn, Angel, Human, Shaytan. But each could equitably manifest within any racial type. Also each could manifest equitably as a well informed person very knowledgable, or as an ill-informed dimwit; but depending only upon the needs in time of Soul in Allah. (It ought to be stated that Shaytan are automatically disqualified from being regarded as Muslim, since I have mentioned that they are in fact individual Souls; they can not manifest true belief in the way a Human needs; nor can Humans manifest belief like an Angel; and only Jinn can manifest any of those three. Ahadith about Jinn states like: Jinn flies or is like snakes and dogs or is in a place and moves from that place; but who else but a Jinn could conceive to manifest such a description being of any intelligence? Mind you neither seem a Shaytan intelligent except to their own self etc. Shaytan have been snavelling up vast wealth in intelligence of self; but more than they even understand. It is common for a shaytan to comment, "oh yeah I did already know that once", but only if reminded of their history. They can be like resevoirs of intelligence of SELF! Where as intelligence of Spirit and Soul is an entirely different matter.
I might like to state: I am having better intelligence than me! (than my self)
A shaytan might rather: Me know better than I am.
And as for men and women, no hope in accurately accounting for one another's intelligence. Needless to say however there is a fact of biological difference, that seems to lend itself to a measure of maleness being above and femaleness being below. But it ain't intelligence mate!
Has the meaning of the word "intelligence" even any real worth? Is it meaning now only what information a spy can gather? Or is it meaning a efficient and resourceful way of accumulation of data? Or is it meaning the process of positioning information within relevant contexts?
wasalam