Superficial?

I was talking to a friend earlier and she repeated something that another friend had said to her. The advice went something along the lines of how in a relationship, it will work best if the female looks somewhat better than the male, and the male is somewhat smarter than the female. You can argue all day about whether this is true or not, but in thinking about it for a while, it started to bug me a bit. Because if it's true or not, just the fact that it was said at all - what does that say about the traits that are valued in women? Hmmm...