I remember reading that analysis at the time and thinking it was flawed.
What it didn't seem to account for was if you rated someone high enough (I can't remember if it required 4 or 5 stars), OKCupid would notify the person in question that you had done so. If you didn't want these notifications being fired off you had to adjust your ratings accordingly - now 3 stars is the highest rating you are going to give.
I think the stats really just ended up reflecting that men were generally more comfortable having their ratings broadcast than women were.
What it didn't seem to account for was if you rated someone high enough (I can't remember if it required 4 or 5 stars), OKCupid would notify the person in question that you had done so. If you didn't want these notifications being fired off you had to adjust your ratings accordingly - now 3 stars is the highest rating you are going to give.
I think the stats really just ended up reflecting that men were generally more comfortable having their ratings broadcast than women were.