While mean sexual value is an important concept, as lukeprog points out with my graph, sometimes it is not relevant. The relevant metric of success in attracting people is something like "being over a cutoff of attractiveness for a subset of the population that you desire and that you can find, and where you don't face a punishing gender ratio in that niche."

For instance, regardless of your average attractiveness, you could be doing great even if 0.1% of the population is attracted to you, as long as (a) you know how to find them, (b) they fit your criteria, and (c) there isn't an oversaturation of people like you that you're competing with.