I had a friend in HS whose mom was a lesbian and she used to wail on him and his sister if they screwed up or crossed her. She was pretty butch though. Sweeping generalizations are only wrong when made my older white males.
C'mon, bullshit. 27 families? And they didn't even compare to hetero families that adopted as a control. Your average lesbian couple that manages to get a kid in their home is going to be on a high socioeconomic than the average crappy family.