Opinion for Tank Gear

[Absurdity]

The game really should tell you about the 60 points of material equals 9 points of Strength/Intelligence. Now I can finally calculate which one is better far more easily!

If you want to go really in-depth use this https://docs.google.com/spreadsheets...#gid=772715780
Make a copy, choose the job at the bottom, put in your current gear set + melds and then put in a 2nd set with whatever upgraded piece of gear you want to get, it will calculate how much you gain from that piece.
It can be a bit iffy with skill speed because excel can't really calculate the correct damage increase for something that affects your rotation.