Just a small note while I'm overlooking this, you also might want to check if the enhancement is a percentage increase or not, and exactly what step that percentage boost calculates. You're going to need a lot of potential data points in order to satisfy everyone, like:
(when I say "Mods", insert possibilities at different steps in the current RATK dmg calculation. if you don't know the order things are calculated, you're going to have to figure it out for everyone
have fun. possible mods = Berserk, Songs, Rolls, Atma boosts [make sure they're rolled into Equipment calcs, as is what Haste is at least], Job Traits, etc... Test as much or as little as you want, but make sure your results actually state you didn't test these instances but you assume based off xyz data that your result means what you think it means)
No JA Used
+12 STR, No Other Gear, No Berserk, No Hasso, No Songs, etc other possibilities based on dmg calcs
Then do the above with all kinds of mods you want to test...
+12 STR, Normal Gear, No Other Mods
then the above with all kinds of mods, same thing
JA Used without Caban+2, leaving Caban+2 off
Same as above groupings...
JA Used without Caban+2, putting Caban+2 on
Same as above groupings...
JA Used with Caban+2, taking Caban+2 off after JA use
Same as above groupings...
JA Used with Caban+2, leaving Caban+2 on
Same as above groupings...
You honestly can get as detailed or as little detailed as you want... but that would give a full range of everything.