"Those poor PR people, how were they supposed to know that a chick plays video games?"
What is the alternative? I am not calling them poor, but you are calling them deluded. And I am deluded. Basically we all believe a myth.
What is more likely is that there is an underlying reason for the PR people and others to believe it. It is the reason that should be analyzed and addressed, not the people who are the product of it.
This is starting to sound a lot like http://www.econlib.org/library/Enc/PublicChoice.html
You're making the same mistake that the PR guy made (Obviously women don't play games, therefore it's an understandable mistake). Stop doing that, would be a really good start.
secondly why do you keep saying that acting based on previously established patterns in one's life is a mistake?
how do you know I'm not a nobel prize winning sociologist, and that you are the one making the mistake
The thing is, the guys didn't get the same treatment... but my point was simply that the PR people were exposed to a certain pattern (someone is a girl => they aren't that experienced playing shoot em up video games) and it was repeatedly reinforced through subtle social feedback, that expecting them to just be good at the game was not producing great results for them or for your brand. And since the PR person wants to do their job and give a good impression of the game, they would just assume this girl was like the others, and offer to show her the best parts about the demo, so that she can write about them.