SEC vs. Big 10

I maintain - to my Buckeye buddy - the supremacy of the SEC over the Big 10 with this rationale; during the last 10 years or so, I believe that no less than 6 of the 14 SEC teams have been ranked #1 - at least once during the season - while only about 2 from the Big Ten can claim this distinction. Am I correct? I'm relying strictly on my memory.