Just to illustrate how stupid this "argument" is, here's a little data on Big Ten and NFC championships since 1993 inclusive (picked because that's the year Penn St. entered the conference):
Big Ten
Ohio St. - 9
Wisconsin - 6
Michigan - 5
Northwestern - 3
Penn St. - 3 (counting vacated)
MSU - 2
Illinois - 1
Iowa - 1
Purdue - 1
NFC
Giants - 3
Packers - 3
Cowboys - 2
49ers - 2
Rams - 2
Seahawks - 2
Bears - 1
Buccaneers - 1
Cardinals - 1
Eagles - 1
Falcons - 1
Panthers - 1
Saints - 1
Because of shared titles, there have been a total of 31 Big Ten titles won in this 21-year period. Three teams (Ohio St., Wisconsin, and Michigan) account for 20 of those by themselves. No NFC team has won more than 3, and to get to the same concentration (20/31, or 64.5%), you have to add up 6 teams (Giants, Packers, Cowboys, 49ers, Rams, Seahawks) instead of the 3 in the Big Ten.
I thought the fact that the pro leagues have more parity than major college was common knowledge - apparently not at the Gopher Hole.