I don't know how anyone can argue against the SEC. The numbers speak for themselves. Absolutely the best conference. Regarding the Big Ten vs the SEC, over the past 15 years or so that I can remember, the Big Ten has actually fared very well against the SEC. The middle of the pack teams from each conference usually battle it out and the overall numbers are almost 500. This year was an aberration.
It's the best of the Big Ten vs the best of the SEC that is a mismatch. Those numbers have proven out over the years too. The top SEC team is usually just simply better than the top Big Ten team.
The reason Big Ten fans get so annoyed with SEC fans is that they always bring up this speed thing. There is no bigger myth in sports. Both conferences put the same amount of speed and skill players in the NFL (WR, RB, CB, etc). It's the defensive line talent in the SEC that just simply dominates. The O line play is also amazing. Just my take.