I think you missed the point of the post Black Aeronaut.
They're not saying 'girls want this ideal guy'. They're saying 'Clark Kent, in either guise, is a genuine nice guy who respects women and does not think they owe him anything just because he helped them out once, and you are most definitely not like him'. And keep in mind that those who are the most likely to say 'girls want a Superman but walk by a Clark Kent every day' are the ones thinking they are that Clark Kent.
They're not saying 'girls want this ideal guy'. They're saying 'Clark Kent, in either guise, is a genuine nice guy who respects women and does not think they owe him anything just because he helped them out once, and you are most definitely not like him'. And keep in mind that those who are the most likely to say 'girls want a Superman but walk by a Clark Kent every day' are the ones thinking they are that Clark Kent.