The past two years this appears like an obvious observation with OSU and Michigan going undefeated both years (a combined 26-0 so far), but this is not the 60's and 70's anymore. Northwestern has won three championships in the past 10 years. Wisconsin has won a few. Illinois just won it five years ago.
I guess I'm of the opinion that if you struggle or lose with the "mediocre" teams in your conference you aren't a truly great team. You better hope other teams out there struggle as well. Take UK, they have done nothing this year, but beat LSU. They are the equivalent of a Purdue. Now, had Purdue beaten OSU they would be the media darling. They would be 8-2 and I guarantee a top 15 team. But they lost, so they don't sniff the top 25. And the Big Ten must be weak because they LOST. Now go back to UK, a team that you probably could compare to Purdue. They beat LSU and now not only is UK this great program all of a sudden, but LSU must be great too, because the SEC is so super deep that a mediocre program could beat one of their monsters.
If Purdue beat OSU, it would have been "proof" that the Big Ten was a joke.
Double standard and another circular argument it seems.