What are the parenthetical numbers in the combat HUD?
I can confirm that the enemy numbers in my version of the game match the format of yours, but they do not entirely match what is said around the internet, but through a quick bit of investigation here is what I have figured out:
The first value is the number of active enemies in the group. If you were facing a group of 5 enemies and all of them are active, this would be 5. However if two of them were asleep this value would only be 3. Apart from sleep and unconsciousness I have not yet determined what effects make an enemy inactive, although I think it is most likely that paralysis would as well.
The second value is the number of enemies in range of the selected character. If you select a melee character while at long range this would be 0, but selecting a ranged character would show some or all of the total members of the group.
The third value is the number of visible enemies, based on what you can currently see. If all enemies are in view, this will be the total, but if you turn the camera, or (you or an enemy) walk behind an obstruction, then this value will be less.