That's cool. Lower is better. I've started on paladin now as well.

Here's something you can laugh about. I just finished off 577-319 in 5-10 increments on both Ninja and Dragoon. Switches to a Bard and only just realised the lowest possible DET I can get is 227, lmao.

Also, I dont believe there is an external coefficient. The Dragoon deals more damage due to a slightly higher STR slope (0.004 difference), but the Ninjas base damage is MUCH higher (2.2 difference). This base value is attributed to the combination of a base damage value, WD and DET.

IF the JP AA test is accurate, where determination scales equally between all 3 jobs, the only difference then is the WD coefficient and/or the base damage value. This is getting really interesting.