Open your stat window and find the following numbers: TotalInt, BaseInt, TotalLuk, DamageRangeMax.
Then calculate the following number: (4 TotalInt + TotalLuk)^2 *0.12037/BaseInt
If your DamageRangeMax is higher then this number, +27% Int is better, otherwise +13 M.Atk is better.
Then calculate the following number: (4 TotalInt + TotalLuk)^2 *0.12037/BaseInt
If your DamageRangeMax is higher then this number, +27% Int is better, otherwise +13 M.Atk is better.

