The point is that the defense we played against Tennessee was fine in regards to that game because we were absolutely destroying them. We didn't have to play some amazing shut down defense because we were winning by 15+ for the majority of the game. We played an entire freaking half where the closest they ever got was to start the half down 15. The last 17 and a half minutes UT never got closer than 18 points and from the 14 minute on they never got closer than 20 points, with the smallest margin being 24 points. When you're playing that well offensively, the focus does not have to be on lock down defense and that directly contributes to the other team scoring more.
Criticizing our defense when we win by 28 while putting up 107 points is silly. Especially when we had 10 steals and forced 20 turnovers. We have a good defense, and it was even pretty solid against Tennessee. Clearly, it was more than enough to help us win by 28.