That's what makes this fun. We can disagree and really can't be proven right or wrong.
Georgia and notre dame had good defenses. Bama put up 41 on Georgia and 31 against the Irish. Texas A&M played decent defense most of the year, but barely showed up against the tide.
I could be wrong, but I think most of their opponents gave up the most points to them out of any of their other opponents. (That's probably not written as clearly as I'd like)
And then they scored double Ohio State's average points allowed in the biggest game of the year.