A high ranking can just as easily create overconfidence and complacency.
When trying to evaluate and rank teams, you have to look at how good the teams played in the aggregate, not point in time based on a highly subjective metric such as ranking (popularity contest). The SOS and SOR metrics reevaluate each week. When the committee looks at quality wins, they don't consider ranking at the time.
There are other factors you can consider such as injuries, but if we look at the body of evidence, which team do you think is actually better, Texas or Georgia? Would Texas have fared as well as Georgia with the same schedule? Note: UGA beat Texas 30-15.