Analysis: why top five college football teams will (or won’t) win it all

The bigwigs are back. The “haves” of college football make up the top five teams in The Associated Press’ preseason poll.
Florida is the easy pick to repeat as national champion, but Texas, Oklahoma, Southern Cal and Alabama all have good reasons to think they’ll hoist the crystal ball in Pasadena in January.
Here are the top five teams in the country, and why they will — or won’t — make the BCS national championship game:

1. Florida Gators