I got these lines on my Fafnir Gun. I was aiming for 2 lines of boss damage, but would these lines provide a larger damage boost for me than 50%-70% boss damage? My understanding is that the 18% ATT potential would provide a 18% increase in damage since I don't have any other sources of % ATT. Is this a correct assumption? How much boss damage would I need on the gun to beat 18% attack and 35% Ignore Def?
These are my sources of boss damage, total damage, and Ignore Def (including Corsair skill updates from RED so Brainscrambler would be my main attack)