Ok so its been officially announced which stats affect which class.
Great now we finally have a use for all those Converts STAT > STAT

Except no.. wait BTN get screwed over.

http://forum.square-enix.com/ffxiv/threads/26648-Stats-And-You%21?p=415358&viewfull=1#post415358

Every class can use the converts except for BTN because STR converts to INT and vice versa. So if you want more items you lose the effect of easier logging.

All other classes can use the convert to get a permanent boost except BTN!