Arky better linebackers than Bama? You must be joking.
Take a look at the preseason rankings for both units, compare them to where they are rated now and tell me I'm not shocked about it myself.
Alabama has more potential at LB, sure. But Arkansas' linebackers have been more productive thus far. Alabama has gotten next to nothing from the Jack position, which is due in part to Courtney Upshaw's multiple injuries, but fair or not injuries are a factor. Chavis Williams has been largely transparent. The coaches started shuffling positions this week in practice to try to get the mix right.
Arkansas has no such issues.
Arkansas also has a major edge in experience. The starters are seniors, including one (Franklin) who could be all-SEC if he stays focused and doesn't get in the doghouse again. Just about everyone they'll play against Alabama is an upperclassman.
Sometimes, you've got to stop looking at hype and start looking at what someone has actually done.