Man jaw shouldn't even be there, although some guys mistakenly devalue man jaw as an aesthetic option.
If you read dentist Weston Price, then you'll know man jaw is often the physiognomy of someone whose mother did not eat processed foods when pregnant and that her baby has a potential for the most vigorous health possible. Most VIGOROUS!
For the discerning eye, man jaw for either sex is at least +1 bonus in SMV.