I agree that 2 attack will not make such a big difference that a 3-hit becomes a 2-hit. However, there can be cases that a monster will have just a bit of HP left or so after say, 3 L7s, and no matter what, 3 L7s from your character specifically will not kill that monster. There could be an incident that upgrading by 2 attack would allow you to occasionally 2-hit that monster. I concede defeat to my point, as I was a bit rough in my description by stating the 'on average' part.
Edit: Is it even worth resetting 10 points from Nimble Body into Dark Sight? I followed an old cookie cutter build 3 years ago. Looking at my stats now, I don't see much use in having 10 extra avoid/accuracy. I could put 10 into Dark Sight at the end of 3rd Job, but then if I decide that I'd rather have stronger say, Shadow Meso, I can't reset those 10 points back into 3rd job. What are your opinions? Is it worth the NX at all?
Edit: Is it even worth resetting 10 points from Nimble Body into Dark Sight? I followed an old cookie cutter build 3 years ago. Looking at my stats now, I don't see much use in having 10 extra avoid/accuracy. I could put 10 into Dark Sight at the end of 3rd Job, but then if I decide that I'd rather have stronger say, Shadow Meso, I can't reset those 10 points back into 3rd job. What are your opinions? Is it worth the NX at all?