No it is not, as both sexes have those. A penis and balls are distinct, as are the hormones that are produced by those that own them. They are called males. Females are very different, whilst still having four fingers and a thumb on each hand.
I was trying to point out, rather clumsily as it turns out, that we are all different, but none of us are unique.
We all have similarities, and differences.
Disfigurements, disabilities, dysfunction and deformities, however you want to call them, appear in allsorts of places, not just the normally visible places.
And it's highly unlikely that the average person with a disfigurement or deformity will choose to publicise it.
So we may not know the physical differences of even our closest friends.
Then there's a whole range of issues that can affect the fetus, and infants.
E.g Testicular Regression Syndrome. when one or both testicles may whither and dissapear, shortly before or shortly after birth.
They may be declared as males at birth, but later, without testicles they may develop feminine characteristics.
As I said, we're all different. As soon as you set a "model" of what each of us should be, you start excluding some.