I don't think he would have had an unfair advantage competing against boys.
The difference in my opinion is that his "PED's" were prescribed by a physician to treat a medically recognized condition. Even the NFL allows players to used banned supplements if it is in conjunction with a medically viable treatment.
I agree, she probably would have gotten wrecked if she wrestled boys in the same weight class. That's probably one of the reasons there are boys sports and girls sports.