Record meant nothing. Just look at the last 2 additions (Arkansas & USC).I'm surprised that Oklahoma was invited.... with thier track record in Bowl games, I didn't think the SEC would be interested. They are in the same boat as the Buckeyes when it comes to winning bowl games.
Matter of fact, I would think that OSU might be a bit better.
What mattered were the Texas & Oklahoma markets. Huge recruiting hotbeds for the SEC.