If you look at the strength row on the character sheet. You have a strength score, whose purpose is clearly explained and then translated to an attack value next to it. You increase strength, this value goes up. You think, aha, this is where my damage comes from.
Then you look at accuracy, which says it calculates damage together with attack. But if you increase it, there's nothing on that screen telling you it helped. Many players will probably notice that it helps, but the strength vs. accuracy decision will come down to gut feeling for anyone not nerdy enough to figure out or look up the damage formula.
What's also relevant to note is that with the exception of two of Thalia's skills (Frenzy and Distracting Blows), there's no reason to give a damn what your attack value is - I'm happy to explain why Burning, Rampage, Rally etc don't matter here. For everything else, just the "raw damage" (attack times crit) stat would be much more informative.
Maybe it could work to find some magical rephrasing of the accuracy description, but what I think we really need is a "Damage" number somewhere on the stat screen. Perhaps a sword icon at the top (there's space), with a number over it? This would be your attack*crit value. I'm not sure it needs a tooltip, but if you want to use one it could say:
This is your base attack damage. This is divided by your target's defense and multiplied by any ability modifiers to determine the damage your attacks deal.
What say you? I think many non-nerds could figure out the damage formula by themselves like that, and even those who can't can still just increase the stat that ups their damage stat the most, with 99% your playerbase eventually realizing that the best method is to always increase the lowest one

