Has anyone else noted that our AMA Safety Code dose not agree with the FAA's Advisory Circular AC 91-57 wrt how and where to fly models?

AMA:
2) I will not fly my model higher than approximately 400 feet within 3 miles of an airport without notifying the airport operator.

FAA:
c. Do not fly model aircraft higher than 400 feet above the surface. When flying aircraft within 3 miles of an airport, notify the airport operator, or when an air traffic facility is located at the airport, notify the control tower, or flight service station.

Significant intent difference there on the altitude issues.

Whatcha think???