I don't really think this is much of a competition. I mean, the games are all quite different and offer very different kinds of game experiences, so they target different kind of gamers. I don't think there are that many people who are interested in several of those games.
If a rap album and a heavy metal album are released the same week, would the rap fan buy the heavy metal album?
I understand what you are trying to say, but with games it's a lot different to me. In music I only like those genres you listed to be honest, but with games I am open to a much wider array of play styles. I welcome anything new and unique is what I am trying to say more-so than with music.
In that month I would like to play most of them games listed. In the end though Skyrim will be probably be my only game I buy because I am smart (maybe lol) and know that most of the other games will probably come down in price early next year. I do want to play them though right away, if you get me. Oh and also because Skyrim will keep me more than engaged of course, and I'm a busy person.