The premise of your argument is that people are hired (or promoted) based on concrete, analytical evaluations of their abilities. Nobody who works in this industry believes that happens.
We enjoy discussing how warped industry hiring processes are when it's just shop talk, but introduce gender parity to the discussion and all the sudden it's like someone proposed to round pi down to 3.
Can you tell me what is equal about hiring a woman over a man, "just because"?