If we had a new hot-shot head coach that thought he was a world beater, I would give your theory of UAB being unknown some creedence. However, you are going up against the DEAN of SEC coaches. He has been at Tennessee almost twice as long as any other SEC coach at their school. (Ark's Nutt is 8 to Phil's 14) Phil has played you before, and he will NOT overlook you. Not to mention, the staff has had very little turnover as well. Sorry, if your big hope is that Tennessee will overlook you, it's gonna be a long day.
As for which unit is better, I would have to say the Defense. Our defensive front 7 is more than likely the best 7 as one unit, in the country. There are schools that have a better LB core or a better front four, but not both as good as Tennessee's. Our secondary gave up some big plays last season, but we have our best player back to his natural possition, and we have a guy back from injury that we didnt have. We also have guys that now have a year under their belts, and an incoming freshman that would start on most team secondarys in the conference.
The offense is amazing too, but I will give the defense the push, only because the O-line has a hole at center, and the running back has some focus problems as well as not knowing yet who the QB is. That's about as negative as I can get about our offense. There is a reason the Vols are being tabbed top 5 to top 10 in the country and winners of the SEC.