Question #1: Would it increase damage for a WS more by increasing fSTR by 4 or by increasing a 25% or 50% non STR mod by 18?
Question #2: Has it ever been conclusively tested if attack above 999 continues to make a difference? Could do this in ballista VS a PLD or BLU with very high defense. It would probably be valid to see if attack is calculated above 999 as if it were higher, if nothing else.