When it comes to protection. Yes it is.
Well, we disagree on that, since protection these days is not generally hand-to-hand combat, and I know many women who could take their husbands even at that.
BUT, putting that aside, even if I agreed with that, I would have to say, then, that if protection is a one-way street for the woman to the man, if we are being that black and white -- that the male of the species is generally stronger and more agressive, then childrearing is a one way street as well, in which the male should place his trust in the generally more nurturing and passive female.
So we're back to trust operating both ways.