I don't think there's much to this. Initial reports relayed through several people often get misunderstood. I don't think the hijackers used guns.
I dunno. There sure is a lot of specific information in the original account, including the seat numbers and names of the two men involved.
Sorry, I'm one of the LEAST "tin-foil hat" types on FR, but I smell a coverup. AA, I'm sure, did NOT want it to get out that a passenger had smuggled a gun onboard.