I hoped for at least mention of pokemon, which supposedly was a game born out of the (once popular?) kids pastime of capturing bugs and making them fight each other.
Nor does it mention the massively popular genre of Human Fighting games, like Call of Duty.
I'm reminded of Penny Arcade:
Just because a game contains objectionable material doesn't mean that the players will do that.
Furthermore, there is a difference between violence on humans and violence on animals. Regardless of the how violent our entertainment gets, there is also a constant reminder from society/whatever that it's not cool/moral/right whatever to actually maim/kill other people. On the other hand, there is much less of that when talking about animal violence.
Anyhow, I still think it's kinda silly. No actual reason for it to be pulled. I really think that everyone is just going through the motions here.