One generalization you're making that I think is wrong is equating position with brightness.
While there is certainly some correlation, there's also a correlation with values.
intelligence and body symmetry are positively correlated.
Body symmetry is also correlated with attractiveness.
Granted, smarter women who are higher up on status hierarchies have resources that help to persuade.
Personally, although I have a 130 IQ and have attempted several different career paths, I've made a lot of decisions over the years that are more relationship than career oriented, and as a result am in a happy relationship making a very subordinate salary but doing something I enjoy.For example, if one saw higher intelligence as a value then greater reproductive fitness that comes as a result of lower intelligence produces a result which could be viewed as lower quality.I agree with the other comments saying that it doesn't sound like a very useful study for making generalizations.The genetic characteristics that make women bright, motivated, and successful are getting selected against more often than was the case in the past.In the Western industrial countries when women had far fewer opportunities to rise in status hierarchies and earn high incomes the women whose genetic potential was being suppressed appeared in more subordinate roles and hence were more attractive to successful men."These findings provide empirical support for the widespread belief that powerful women are at a disadvantage in the marriage market because men may prefer to marry less accomplished women," said Stephanie Brown, lead author of the study and a social psychologist at the U-M Institute for Social Research (ISR).