Sorry, I am not familiar with the rules so could you explain what you rolled? are we rolling d20s?
Sure. In Pirate Borg combat the player rolls both to attack and defend (in contrast to 5e, where the DM rolls for the enemies). Also instead of rolling against the enemy's AC, you roll against a standard Difficulty Rating (DR, the Borg equivalent of DC) of 12.
So to make a Melee attack, roll d20 and add/subtract your Strength modifier.
Or to make a Ranged attack, roll d20 and add/subtract your Presence modifier.
If the result is over 12, you hit the enemy. Then roll whatever damage die your weapon deals. In my case, a machete does d4 damage. I rolled a 2 for damage with my attack.
To defend, roll d20 and add/subtract your Agility modifier. If the result is 11 or less, you take damage. Armor can deduct the amount of damage you take but Medium and Heavy armor also adds to the DR which makes it harder to avoid the attack. So for example if you wear Medium armor, it adds +2 to the Defense DR (so you need to roll above 14) but it deducts d4 damage if you're hit.
(Also I usually play with the house rule that ties go to the defender. So you have to roll 13 or above to hit but 12 or above to defend.)
Does this make sense?