Incidentally 1.3 tons payload is nothing to an A330.
Could it be that the A330 is the only aircraft type in the world that is not subject to MTOW llimits ? Also what about the center of gravity ? i.e: 1,300 kg loaded in the tail end would have no effect on the CoG ?
I am pretty sure the 1,300 kg were not taken into account in the load/trim sheets !!!