Bama's defense is great. It's not all-time great. In fact, the mystique of the Bama defense is, imo, largely due to playing in the SEC. Clemson didn't get lucky. Clemson didn't play perfect. Clemson turned it over twice and gave up a blown coverage TD. 99 plays. Over 400 yards 30+ points and they all came on long drives. Bama's defense is a lot more like the recent Clemson defenses than it is some legendary group. Only difference are the leagues the two defenses play in.