The thing that keeps coming back is that Alabama had to show their hand against UF. They came out with a little trickeration of their own that hadn't previously been seen from their O.
It could work in Texas' favor, because they have now seen most everything this offense can do, and have had several weeks to gameplan for it. Of course, it could also work in Alabama's favor, because they have had to plan for so much that they haven't necessarily been able to pinpoint in on one or two specific areas of their offense.
Ultimately, Alabama's defensive weakness (if you can call it that) is their pass defense. It just so happens that Texas' offensive strength is their passing game. If Texas can successfully spread the field and make some plays, this will be a very close ball game IMO, because I don't personally think Texas' defense will be able to stop every facet of the Alabama offense. In other words, Alabama will score their points...it is just up to the Texas offense and/or special teams to get them their points too.
All that being said, my real prediction is:
Alabama 31
Texas 28