Quote Originally Posted by Mjollnir View Post
Determination has about a quarter of the effect of Attack Power (ie STR) at level 50.

Haven't quite worked out the numerical impact of Defense yet. It's tied into your level, so at lv50, the same defense score will mitigate less damage than it does at lv45 against an identical enemy. It's also seemingly non-linear in its reduction (in fact a graph of test results comes out as a waveform...).
Oh, sorry. I was thinking that to add attack power materia would be better that determination materia then but I only now realized there is no attack power materia after reading Molly's guide. I didn't realize there was materia for some of the derived stats but not others... That's what I get for making assumptions.

Here's the next potentially stupid question then. Do we know what base stat each derived stat is derived from? It's not immediately obvious to me from reading the guide which base stats determines for example skill speed or even accuracy and determination even if I could make an educated guess on those.