The assholes get laid far too often.
I'v always preferred quality over quantity myself. 
They seem to do well in both respects at times, I know assholes that sleep with the wives of men who are nice guys. They may not do well personality or intelligence wise, but in looks they can do well. Plenty of pretty women who seem to think a guy is worthless if he doesn't mistreat them and treat everyone else like shit in the process.
Part of it is the more of an asshole a guy is, the more willing he is to totally use too-nice girls. Same is true if genders are reversed- girls how are assholes are more willing to use too-nice guys. From the perspective of a girl who in retrospect has many "too-nice" tendencies*, I'm starting to become very aware that, unfortunately, gratefulness can be a damn poor motivator for reciprocation. Kind of sucks to know I may need to learn to be a bit more of an asshole (or at least be OK feeling like one, even if I'm not objectively being one) if I don't want to be walked all over in future relationships. I think my being totally nice tends to train guys I'm with to feel fine about hurting me. 
*oh god how I hate to admit that
How about....................JUST BEING YOURSELF, no compromises, no apologies, no WHATEVER. Playing the GAME begets the GAME and more of the GAME ad infinitum, ad nauseum.
I hate to ponder this, but, if anything happened to my wife (and I hope I die before her), I would stay celibate and single for the rest of my life, rather than deal with the mind games of mating, EVER AGAIN! Rosie Palm and her five sisters would be more than sufficient for me.
Interesting double-bind, isn't it? From the outside, "nice guys" complain about how assholes always get the "nice girls" who let the guys walk all over them. When you drag the issue out of the black-and-white 'extreme' ends of the spectrum and take into account how being a spineless doormat like I
know I've been in the past (and find it all too easy to be) can actually encourage others to BE assholes- behaviorally, it's reinforced, not punished, and to not be totally 'taking' would be a self-inflicted penalty- it stops being something that's quite so comfortable, because it's not so "easy" any more. I'm loathe to 'blame the victim,' but at least I can say I think I must have had a part in the way my own relationships have the tendency to end up lopsided.
I wish I could say that the problems I've had have been all a matter of who I date but it seems illogical to think there has been NOTHING interactional about it. I know I have thus far shown shitty, shitty mate selection, but I also really think I encourage my mates to be selfish by
letting them. The idea of needing to be "more of an asshole" is only half-joking- I think I very likely need to be much more willing to show negative affect/sometimes be a little selfish/just generally be less than "practically everything a guy could ever want" even if I think I very well
could be. I think that what would look from the outside like healthy reciprocity would make me feel like an asshole because it's so alien to me- like, I'm uncomfortable with 'taking'- even in little things, like if in a group we have someone who's sort of designated to make a run to the kictehn to drop off trash/grab drinks, I'm the only one (besides the designated trash guy) who seems to get antsy about it, and half the time I'll end up kind of accompanying them just with my stuff even though there's no sane reason/it's less efficient. Imagine that tendency permeating most or all apsects of one side of a relationship- there's no way it won't have an effect.