Originally Posted by Flailey
If he had bought one ticket and then went to buy another and found a lower fare same day it would indeed apply. The OP isn't clear... but yes I should have mentioned the same day rule in order to give better info, since reading it now it's definitely implied that one was purchased long before the other.
No, you're still wrong:
http://www.aa.com/content/urls/guarantee.jhtml
AA's aa.com lowest fare guarantee requires that you find a lower fare on some other website, so I respectfully disagree with you.
So many answers, so little advice