In order to ensure participants are evenly matched, materia bonuses, as well as the Morale parameter, will be ignored while item level sync is in effect.

As of patch 2.3, item level sync will be applied to the following PvP instances:

The Wolves' Den (Matched, IL 80) / The Wolves' Den (Light Party, IL 80) / The Carteneau Flats: Borderland Ruins (IL 80)
Not sure if I'm reading this correctly, if I do can I get a refund on the Materia I used to meld my PVP equip? I don't feel like throwing 10m+ in a trashcan.