There seems to be more than one book to read. The French have an emergency evacuation limit of 440, as I mentioned above. The FAA type certificate has:
Number of Seats:
The maximum number of passengers approved for emergency evacuation is 379 passengers with a 4 pair of Type A and 1 pair of oversize Type III exits configuration.
Does this mean that Vol 3 (not sure what this is) allows the aircraft to operate beyond its certified limits?