...and all of that ignores simply going game by game and analyzing the schedule and results. Anybody who knows anything about Tennessee football knows that the schedule set up beautifully after the bye week but we had not one but two bad losses.
The school record points and PPG numbers are the epitome of having your mind made up ahead of time and searching for stats that fit your sunshine pumper narrative. The point total was juiced against inferior competition/horrible defenses (55 against Tennessee Tech, 49 against Kentucky, 63 against Missouri). The offense also played badly against some inferior defenses (App St, Ohio, South Carolina). Against quality competition, the offense was either outright bad (Alabama) or wildly inconsistent (Virginia Tech, Florida, Georgia, Texas A&M).
That's the beauty of college football. They only play 12 regular season games, and you can just go game by game to do an analysis of how the season was. It isn't like baseball, basketball, or hockey where averages mean more.