There Are11 Domestic Airlines Worse Than Air Tran

In the beginning of this year, I had the tragic experience in the Atlanta Airport. On the way back from NY, I had to stay in Atlanta for three nights because of the flight's cancellations in the icy weather. Because I didn't have enough money to sleep in the hotel, I slept on the bench in the airports for three nights. I thought I was experiencing little bit of the "Terminal."
Missing my classes, spending almost $100 for the meals in the expensive airport restaurants, no shower, and sleeping on the bench, I felt the "Terminal" was like a hell. One thing surprised me was that the Air Tran did give a free meal ticket for only one meal to their customers, who got stuck in the Air Port for a few days. In Japan, if the flights are canceled for any reason, the airlines pay enough money for their customers to eat and sleep in hotels and sometimes let them upgrade to the business class. 
I've used Air Tran many times when I go to other states because it's often the cheapest. Anytime I use the airline, the company make customers wait until the seats are filled even though it's already past the departure time. I though I didn't care the service or quality of airlines as long as it's cheap, but Air Tran is too bad for me to say, "Air Tran isn't bad." I thought Air Tran was the worst domestic airlines without any doubt, but Air Tran was not in the 11 worst domestic airlines according to the website, The Huffington Post.
I became scared to know how worse these 11 airlines are than Air Tran. How bad is American Eagle, the worst domestic airline?