Roll the hero die and the adversary die together. The higher one, after modifiers, wins the round.
The difference between the dice (including modifiers) is the “result” – which is usually used for a subsequent effect, eg. damage to the loser.
Example:
A hero is battling an enemy.
- Roll both dice:
- Hero:
16 - Adversary:
10
- Hero:
- Hero is higher, so it wins this round
- Subtracting them from each other (16-10), the result is
6 - The enemy takes
6damage