@mossmadness is correct. Given the talent differential, if Ole **** wanted to have even the slimmest chance of beating Bama it would need to take lots of chances and hope for a lot of luck. If a team is say, within about 10 spots in the overall talent rankings (like Oregon and OSU), then the underdog has a chance of beating the more talented opponent if they play fundamental football, the opponent comes out a little flat, and can capitalize on a few mistakes. When the talent differential is enormous like between Ole Miss and Bama, the HC has to be super aggressive and try to steal possessions because I can't remember a time that a Bama team ever came out flat. Sometimes being aggressive backfires, but it's the right strategy IMO. You also have games like App State - Miami where one school has a talent edge but is horribly coached and physically weak. An inferior opponent that is hungry and aggressive can punch Miami in the mouth and know the team will fold like a cheap card table.