First, I hope my information is clear to you all, if not, I apologize, but English is not my primary language.
STR, DEX, VIT, AGI, etc... all have the same effect on each race, and each job. Whether you're an Evlaan warrior or a Tarutaru white mage, all the character stats have the same effect.
I am going to leave the weapon DMG rating out of my discussion, since I want to focus solely on character stats.
ATK and STR both effect the amount of DMG melee attacks have on opponents, but at opposite ends of the scale. For example, each opponent you fight will have a minimum amount of DMG you can hit it with, and a maximum. Suppose the lowest you can hit a particular opponent for is "20", and the maximum you can hit the same opponent for is "30". As your ATK raises, so does the minimum DMG you can deal, conversely as your STR raises the maximum DMG you can deal raises. If your ATK raises the lowest you may be able to hit the above opponent for is now "25", and as your STR raises the maximum you can hit the same opponent for is now "35".
So what is more important? Well not only does STR raise your maximum hitting potential, it also raises your attack at a 2:1 ratio, therefore also raising the minimum DMG you can deal. I will not tell you one is more important that the other, you can decide for yourself.
VIT does not in any way effect your hit points (HP). VIT works very much like STR, only for absorbing opponent hits. VIT lowers the maximum DMG a particular opponent can hit you for, while DEF lowers the minimum.
I do not mean to offend anyone who has posted inaccurate information, but please if you're going to inform others at least make it correct. If you don't know what you're talking about, please put that at the beginning of you post, so it will be taken with a grain of salt.
Edited, Mon Jan 26 13:50:15 2004 by TenGHz