But for men, if you are able to have sex with a lot of women, it suggests you are a high-value sexual partner. Imagine women as venture capitalists. If you just throw money at every startup, not knowing if you're going to get any good returns, you're a pretty shitty venture capitalist. For men, if you're a startup who is getting approved by every bank, investment firm etc. it suggests you are a high-value business partner.
Clever twist on the "a key that opens every door is a master key, but a lock that is opened by every key is a terrible lock" analogy - if it's your own.