Peter in this verse was referring, not to emotional, but to physical traits. Bone and muscle structure are such that men are usually endowed with more physical strength. However, there is no indication that Peter was making a comparison of moral, spiritual, or mental strength. Really, as far as emotional reactions to events go, women might best be described as different from men, not necessarily weaker or stronger. The Bible describes the strong moral character, the endurance, and the discernment of women who followed God's way-such as Sarah, Deborah, Ruth, and Esther, to name but a few.
Humble men have no difficulty recognizing that women can be more intelligent than they are.
But consider this example. A person has two useful containers. One is sturdy, the other less so. Actually, the less sturdy one is usually treated with more care and honor than the sturdier one. Christ always placed his disciples' welfare and interests ahead of his own personal desires and preferences.