I'm all for warnings about the type of content that a game has in it, but lying about what violent games make you do is a bit overboard. Hell, I'd even support stricter monitoring of purschases, so long as it's not some extreme inconvenience to the regular joe who's old enough to buy whatever.
The only link I can agree to between violence and video games (other than anger via frustration), is that violent people are probably more inclined to play violent games.