I'm not aware that this has ever been a subject of doctrine. In fact, the Church exalts women in many cases. In fact, the only reason many men even have a chance for salvation is because of the influence of a woman (I would include myself in this category).
That's all quite beside the point. It might be true that many women are who hold their men accountable, or else their good example leads to conversion, etc. In fact, St Paul mentions this, that the pagan men might be converted by the good example of their Christian wives. In any case, that's not the issue. When somebody, such as myself, says that women are less perfect in intellect than men are, I am by no means debasing women. As for having "less character," well, that is rather vague and I would have to be given a clarification of what exactly the OP means. But there is certainly no reason to "come to women's defence," since women were not under attack.
When I say that women are less perfect than men in intellect and that men's rational faculties are more perfect, such that men should be given to serious intellectual pursuits and public activities (wielding authority, teaching, judging, ruling, rhetoric, strategy, enforcing the law, etc.), I am only repeating the teaching of St Thomas :
"
Now the reliability of a person's evidence is weakened, sometimes indeed on account of some fault of his, as in the case of unbelievers and persons of evil repute, as well as those who are guilty of a public crime and who are not allowed even to accuse;
sometimes, without any fault on his part, and this owing either to a defect in the reason, as in the case of children, imbeciles and
women, or to personal feeling, as in the case of enemies, or persons united by family or household ties, or again owing to some external condition, as in the case of poor people, slaves, and those who are under authority, concerning whom it is to be presumed that they might easily be induced to give evidence against the truth.
Thus it is manifest that a person's evidence may be rejected either with or without some fault of his." -- St Thomas, Summa P. II-II, Q. 70, A. 3.
"...
as a rule women are not perfected in wisdom, so as to be fit to be intrusted with public teaching." -- Summa P. II-II, Q. 177, A. 2.
"Subjection is twofold. One is servile, by virtue of which a superior makes use of a subject for his own benefit; and this kind of subjection began after sin. There is another kind of subjection which is called economic or civil, whereby the superior makes use of his subjects for their own benefit and good; and this kind of subjection existed even before sin.
For good order would have been wanting in the human family if some were not governed by others wiser than themselves. So by such a kind of subjection woman is naturally subject to man, because in man the discretion of reason predominates. Nor is inequality among men excluded by the state of innocence, as we shall prove (96, 3)." -- Summa P. I, Q. 92, A. 1.