No coincidence methinks that both the researchers conducting the study and most of the commentators below a) are men and b) believe these results are not only plausible, but even obvious. Men have always enjoyed ascribing to women opinions that are not actually our own...
FYI, a personality trait that is actually generally going to give both sexes an advantage in sex is confidence. Given that society encourages us to believe that men with muscles and money are going to be more attractive to women, these men are likely to be more confident - and therefore more successful in love.
Personal opinion: on a purely aesthetic level, the golden medium is best - not too skinny and not too muscular. But any bias based on looks can be overcome by a winning personality.
