Agreed. There were 7 SEC games per week this year, minus a couple that were cancelled, that makes 68 regular season games. That means across the conference 68 wins, 68 losses. No OOC games that result in wins for the conference without losses.
Bama, A&M, Florida, and UGA ranged from extremely to very good this year -together they accounted for 33 of those wins and only 5 losses. Meaning there were 35 wins and 63 losses leftover for the remaining ten teams. So the argument could be made that any team with a record above 3.5-6.3 may have actually been quite good, just not in that top tier.
Of course arguments could be made for or against this method, but looking at it that way I think Auburn, Missouri, and LSU were probably pretty good teams this year, and might have ended up ranked with a normal schedule, and Kentucky, Tennessee, and Ole Miss would have been your standard bowl teams. That wouldn't be called a down SEC.