Oh yeah so they've mathed out the FD nerf
https://www.reddit.com/r/FFBraveExvi...ula_uncovered/.
tl;dr the lower your weapon's atk is (or average atk if dual wielding) the more it reduces your dmg compared to what it normally would do. Another note is this actually lowers the dmg dealt even with normalish atk. So like anything below 180 for single wielding and average of ~155 for dual wielding will do reduced dmg compared to before. Means going to have to think a bit harder on some of those utility offhands like killer effects and really pushes for stmr weapons