Why would "female" lenses be inferior? Your examples neatly illustrate the gender of the designer(s) is moot ...
Usually lens designers were males, so for me that they designed them was special. As an engineer when I started studying
it was just 4 out of about 400 students, and they were much brighter than their male colleagues. Later on I worked with one
of them and she once told me that as a female you had to be at least twice as good to make up with the males. It was a real
pleasure to work with her...
It was my type of a compliment.... ;-)