I think, or perhaps hope, Texas plays its A game and can make a game out of it. Playing its best, Texas can beat any team in the country.
But as MDot and others have pointed out, we really haven't seen Texas at "its best" very often this season. The game against Michigan was really good, but it was a long, long time ago. In the second half of the season, the Horns have pissed down their own legs and shot themselves in the foot so many times it's really tough to believe they're capable of anything else.