Not because they are narcissistic but because they cannot at all anticipate the judgement of other people who are viewing the act. Men cannot definitely control the reaction of the people and the spectators and on that note, cosplay outfits sometime they become vain for a purpose. Men do not usually think of what others would think about how they cosplay. The mere anticipation of a performance could manifest a success or a total downfall of the cosplay fight to begin with.