If I am reading this correctly, these are ostensibly the same trait.
Will of the Gods
Whenever this model performs an Activation or Reaction roll on two or more dice, you may re-roll a single die.
vs.
Battle Hunger
Whenever a model with Battle Hunger makes an Activation or Reaction roll on two or more dice, you may increase the result of single die by 1. Apply this rule after rolling the dice
My probability math is a little rusty, but I don't think there's a huge difference between the two rolls.
The mechanics of this are very slightly different, but they really might be too similar to be worth having both.
I'm not sure what the point costs of these traits are, as neither of them are in the ASOBH Profile builder. Neither one appears in a profile in the ASOBH PDF.