With two adel:
Heavy
Normal
Light
With bd primary and adel secondary:
Heavy
Normal
Light
This was done with blank bs crafted scale of all 27 def to have as little variables as possible. I’m also wearing a ring of greed.
As you can see there’s a large difference in flee, an almost exactly 10 point change in def and MDef and ~220 point change in Aspd.
This tells two things:
1.) The differences are fixed not variable.
2.) Unless you choose to take light or heavy mastery, the benefits of heavy or light are minimal. +220 aspd means little. The flee increase for light is nice However in a boss battle, the decrease in def is noticeable. You’re looking at around a 200 damage difference against warmonger stomp attack and 400 damage difference against his tailspin aoe.
That’s 400/800 difference.
Inotherwords, normal for bosses and light for mobs.
Unless you take light mastery.
The Revenants of Toram 