[quote=Azseth]
Realistically, those "alpha" characters would be the ones who most likely survive. They are trained, efficient and mentally more capable than most. Az
[/quote]

Aye. In a book I read, they had a great saying that went something like this:

You're either really stupid lucky to survive an apocalypse, or you're very skilled, and very lucky.
Problem is, you can't count on luck.

In the first few months, the lucky will usually survive. They might get into a good group of survivors, people who can protect them, etc. But as the months wear on, the people who are only lucky begin falling, cause the dice have no memory. Those who live learned new skills quickly to become somewhat skilled and lucky.

Realistically, the walkers are going to be hardened survivors after 9 months of fighting, running, and surviving. The CDC group is where you will find the "Lucky" people. There of course will be "nests" of preppers, shelter-folk, out there as well.