I think what you mean is that Oregon will be "sickly" experienced in their system. Do not make the mistake of discounting the importance of a coach in their specific system. Arkansas promoted an assistant to take over after Petrino, too. They performed exactly the way their talent would predict. That isn't a fluke.
But where did all of Oregon's supposed world beater talent come from?
Here are their rivals numbers.
Overall Stars
Year.....Rank.....5*....4*....3*....Other*
2013......22.......1......7.....7.........4
2012......16.......0......10....9........2
2011.......9........2......9.....12.......0
2010......13.......1......10.....9.......3
Average Rivals Recruiting Rank: 15
Tennessee has a Rivals recruiting rank of 15 during the same span.
The first counter argument that many people make is that Tennessee has had an unusual amount of attrition during that same period.
I don't think you will find that the exodus you guys have seen is terribly unusual across the 120+ team NCAA docket, you just pay far more attention to a small subset of teams. In essence, we haven't really lost talent, just the experienced talent.
The second counter argument that many people will make is that Oregon just "looks" better than Tennessee, and more people talk about them.
A few things to consider here: Strength of Competition and a system that produces more offensive flash. Oregon plays in the PAC. Couple that with Oregon running a more high scoring offensive system in a league with defenses far inferior to SEC defenses and you see why the talking heads get all slobbery when discussing Oregon.
The third counter argument that people will make is that Oregon "coaches up their talent" better than Tennessee has "coached up theirs".
That is absolutely true. What it means, though, is that Oregon had hit a ceiling and had been performing at a level far above their intrinsic talent would indicate. Tennessee, on the other hand, has been performing consistently about 4 games below their talent would indicate. In other words, there is far more upside to this UT team and far more downside to this Oregon team.
The final counter argument that people make, and this is the most silly, is that the talent on defense was proportional to the on the field performance last year. As defense is what will stop Oregon's offense, this must mean that we are doomed. Last year was an amplified example of what under or mis utilizing talent can look like. The results on the defensive side of the ball aren't simply that we don't have the horses, it is that our horses were blind folded, shackled and beat.
Now, we play Oregon early enough in the year that if there are going to be problems with the coaching transition and the utilization of talent, it will be exploitable. The downside to that is that we play them early enough in the season that the kinks in Jones' system will probably be more easily exposed.
This game will be won between now and August, depending on how both teams react during the off-season work outs and summer training. Granted, that puts Tennessee at a disadvantage because they have to surpass years of under performance, and all Oregon has to do is not drop off significantly.