Originally Posted by JJeffrey

While it's definitely tight, AA sells this connection as meeting the MCT, so it should be fine.

While I would never attempt such a connection at say JFK or ORD, Tokyo is a different story. There will most likely be AAgents meeting your flight to escort all the close connection passengers to the gates.

Additionally, worst case scenario you miss the connection, there are several other options to get you to JFK from NRT later in the day.