Tails come apart. The most successful actresses are not the most attractive women.
On average, the most successful actresses are certainly more attractive than their male counterparts at least. While both tend to be good looking, a man who is not attractive but has other talents (funny, athletic, good at physical acting, charismatic) tends to have a better chance at fame than a woman with the same talents and the same flaws.
Oh, that sounds interesting! Definitely gonna check this out.