It's relevant from guys point of view. For us guys, attraction is directly proportional to "physical and aesthetic quality of the body" and that is interchangeable with attractiveness in pretty much any context. I take it's not the case for women?
That doesn't tell me anything since I don't know how much it matters for women. Well, I have neither met a woman who found me attractive nor one that wanted to date me, which would indicate some correlation. That's not something I can draw conclusions from though.
Different people have their own standards for a partner. That's not a double standard. Perhaps a bisexual might have a double standard if they have different sets of standards for men and women they date.