However, many analysts believe that Delta would have been the wiser choice and offer long term benefits and I agree with them. Delta connects Japan with 10 American Cities wheras American only 4 and would have been able to assist JAL with its international routes. I just find Delta a more secure international carrier when comparing to American even over the Pacific where Delta has to operate its own aircraft when connecting from Narita to various Asian cities.

http://www.reuters.com/article/idUSTRE61827S20100209