Taking this a step further... The more violent the video games, the more likely we are to take violent criminals off the street, right? I like where you're going with this.
No. Definitely not. I deal with the certain "urges" on a daily basis. No matter how much gore there is in a game, no matter how graphic, it will never replace.
Just like holding a brightly coloured object in front of someone doesn't cure depression. Nothing does, it only temporarily sets it aside.