It's more of a choice empowering thing with playing video games unlike just watching movies or TV shows. As, in the former, you get the choice to decide what to play your character as which is directly showing your inner desire not like it's the games that's decided what you have already decided to play your character as.
Personally, I do think that movies or TV shows depending on how's it's produced would have more effects on impacting on one's tolerance levels. Take for instance in the movie Street Fighter ; there was an experiment where a beast was being feed video acts of violence with the bid to wire him to be inhuman and very destructive. Some may argue it's all scripted but in reality, it's very effective.