Your analogy is a bit off! You can have a woman with both great boobs and a great butt and also a woman with neither. A man could have a preference for one trait over the other but still have fondness for the alternate trait and also get them both. I could not legally have a 60/62 with no headlights and no one would want one with both, yet the optimum woman would have both. I understand that you were striving toward a humourous personal preference analogy from the perspective of the observer, But because you can have it both or neither in a boob/butt preference it doesn't track as well here because the choice of 60/62 headlights is mutually exlusive.
For example: My wife has amazing headlights yet I love watching her bend over to pick something up.