According to Tony Harris, comic artist for various series including Starman, Iron Man, and Ex Machina, cosplayers (specifically female cosplayers) are:
Yep, Mr. Harris, you caught us. Everyone in this picture knows absolutely nothing about comics. Two-Face in particular chose his costume solely to manipulate all the boys at the convention because “the thought of guys pleasuring themselves to the memory of [him] hanging on them with [his] glossy open lips … just makes [his] head vibrate.”
Time to hang up our capes and cowls, boys and girls. We’ve been found out.