The PEQ database is (now) populated from Magelo which used an application to monitor the items looted. ZAM is all user submission and generally quite useless for making detailed loot tables.
This NPC should be usng the data on this page for loot:
http://eq.magelo.com/npc/178635
i just attempted to update the NPC on PEQ and it did not do it, so I will drop this on Cavedude to look at the script.