>>12728238The work's already been done.
Shit, there are entire journals on sexual behavior.
Disney has the psychology of sexual attraction down to a science. The character of Flynn Rider in the movie Tangled, for example, is the combination of 14 hot leading guys - from Cary Grant to Brad Pitt.
When you have millions invested in a motion picture, you want your characters to make as many women wet as possible. Aroused women drag dates to see the shit, which translates into big bucks at the box office.
It's all done by focus groups. Guy A vs. Guy B, who would you rather fuck? It's that simple.