I remember having these discussions years ago during the college years.
Then it was FSU or Miami against, well, the Browns.
IDK, a lot of people don't know it, but there used to be a preseason game every year between the College All Stars and an NFL team (usually, the League or Super Bowl Champ). It was preseason, and occasionally, rarely, the College All Stars would win. The most notable was 1963 when the All Stars beat Lombardi's Packers 20-17!
Of course it boils down to who takes it seriously, but the Tide would give the Brownies a game, that's all I'll say. I have to say the Browns would win 20-10 or something, but they'd have a fight on their hands.