The Crit, Direct Hit and Det system needs an overhaul.

[AmiableApkallu]

I actually have no idea what happened, but I logged back on to my black mage after months and my Materia's said 0 in the Aglaia armor even though they did not say 0 when I melded them. I guess they've been messing with the stats?

They messed with them in Patch 6.11:

Resolved Issues
…
- An issue wherein the secondary attributes of Panthean gear obtained from the alliance raid Aglaia were incorrect.
- An issue wherein the secondary attributes of augmented classical gear obtained in exchange for crafted item level 580 gear were incorrect.