Take these rankings within context, chief.
You can't say UGA has the 25th ranked defense and Bama the 24th without considering that they played an outstanding, nationally-elite offense (us) and each have played other games against good, if not great, offenses. OU has played a single offense that's even decent...Ole Miss. And again, what happened there?
Do you want to insist to me that if we were playing these teams, we should be worried about the (close to equally-ranked) defenses of Toledo, San Diego State, Louisville, James Madison, etc.? It's asinine to just say "herp this defense is ranked high we're ****ED" with literally zero context and while totally ignoring that we're at the top in PPG on offense.