
Originally Posted by
Raldo
As far as materia goes, HQ gear has two effects.
1) The materia stat cap is generally lower because the piece of gear has more stats on it (thus making the cap easier to reach)
2) HQ forbidden melds have a slightly higher chance of success.
I haven't personally tested either of those two things, but that's what I hear.
Stat caps vary based on so many different things (gear slot / stat / iLvl / maybe more?) that if you're not asking about a specific stat on a specific piece of gear, it's difficult to give much info.