Actually this is a myth. The Port Authority required them to design the terminal so that widebodies could be accomodated just in case JetBlue were to disappear. That way they would have an easier time unloading the terminal to a new tenant. The way it is set up now it will only accomodate narrowbodies, but with some moving of jetways, it will work for widebodies. However, it cannot be used for customs so it is only good for domestic or pre-cleared arrivals.