re: Who in the Top 10 could beat Alabama?

The only teams that have a shot at competing with Alabama, let alone bear them will have teams that can at least match their physicality on the LOS. There aren't many that can do that. There are probably 5 teams total IMO.

UGA
Penn State
Clemson
*The 3 teams with the best chance

Ohio State
Auburn
*strong enough to compete but the offenses will get eaten up by Bama. Could be trouble if Bama made mistakes.

Oklahoma, TCU, Wisky, any Pac12 school will get destroyed. I think Vegas would back my assesment.