A great offense is going to score on a great defense. Using the NFL as a model, where the players are all elite, an outstanding defense's job against an outstanding offense is to limit the damage. But damage will be done. A cornerback may win 50% of the time covering routes against a star WR, and that's spectacular. The other 50% of the time is going to wind up in points, if the offense as a whole is similarly talented and cohesive. When the offense is less than spectacular--or even just "good"--that defense may well put the clamps on an opposing offense all game. In college, they might do that most of the season, as most offenses can't stand up to them.
But a truly elite offense? Is going to score on a truly elite defense.
UGA can be elite on offense, but it has to be said that a lot of the time they aren't. I haven't put my finger on what the formula is for predicting when they flip the switch and when they don't. I feel mostly the same way about UGA's defense. When they're on, they can put the brakes on most teams and at least slow down pretty much anyone. But sometimes they're off, and they become listless, a bit like their offensive counterparts.
The Texas defense, I have yet to see them "off." I expect them to force UGA's offense to be "on" all game, and if they're not, UGA's best shot will be UT's propensity to not turn domination into points. There haven't been many games this season where Texas didn't hold up their foot, put a shotgun to it, and tell the competition "Hey, watch this." Without that aspect of the Longhorns, they likely would've been one of those teams who went 50-0 several times in a season, instead of 27-10 or somesuch.
It all makes a game between the two hard to predict, even with round 1 to inform us.
...
...
...
...ah hell......
UT 50
UGA 0