I have asked this question many times, and never been given a clear answer. Someone who truly understands and can clearly explain I would greatly appreciate and I'm sure many like me would benefit from understanding.

As a BLM for example, why should I equip INT (rings, and other gear) when I can use that slot for Magic Attack Potency?

I understand a certain number of INT = Magic ATT Potency, but I can gain a greater number in my Attribute menu by equipping the raw Magic Attack Potency.

Can you please explain to me the advantage of equipping INT or any stat over Attack, Attack Potency, Magic Accuracy etc.. etc..

I know there are some guides out there but I haven't found anything in depth that gives me the answer I'm looking for.

I think I speak for others as well when I say thanks in advance!