The trouble would be that you are assuming that the gamer HAS a girlfriend (and is interested in girlfriends), and that I'm pretty sure that there are a lot of girlfriends out there that are going to be thrilled that a gaming store thinks that their worth can be qualified as a monetary amount. And that an object is better than them because it's cheaper.
Also: I'm pretty sure it's possible to take issue with the content of games AND the advertising; people are capable of multitasking their issues. After all, people are dying in wars and yet you can complain about people who complain about gaming ads.