I am no expert, but I am pretty sure a team needs to win more than one straight championship to be considered a "Dynasty". I don't remember the 2001 Baltimore Ravens or the 2003 Florida Marlins ever being awarded this type of praise. Sure, Alabama had a nice team this year, but after the BCS game I am not convinced they are the BEST team in the country. Yes, I said it.
Maybe the good folks from Sports Illustrated meant to put "Lucky". As in.... considering they allowed a true freshman QB to hang late into the 4th quarter, Alabama sure is lucky that Colt McCoy was injured in the BCS title.