It's the same thing ledge. Both are independent url's that redirect you to the same site, same blackout areas as well.
There are two different sites now for online broadcasting; ESPN3(60) and Watch ESPN. The later is mainly an app but if your Internet provider is part of their package you can watch ESPN, ESPN2, etc., programming on your computer and the ESPN3 site carries the other Gameday package programming.
Bottom line, unless you are going to use a proxy, if you live in Alabama or Florida you aren't going to be able to get a live stream through the ESPN sites.
www.Justin.tv might carry it.
www.firstrowsports.eu has it scheduled to stream.