Derren said:
The "bound" in the helpless description is a status. The bound in the Iron Band description is a action which results in beeing held immobile (status). Simple reading will reveal that to you.
Nowhere in the description it does say that the target is bound (status).
So, if they are not bound and helpless, what are they?
They are not Grappled because it does not say so.
They are not Pinned because it does not say so.
They are not Ability Drained, Blinded, Blown Away, Checked, Confused, Cowering, Dazed, Dazzled, Dead, Deafened, Disabled, Dying, Energy Drained, Entangled, Exhausted, Fascinated, Fatigued, Flat-Footed, Frightened, Incorporeal, Invisible, Knocked Down, Nauseated, Panicked, Paralyzed, Petrified, Prone, Shaken, Sickened, Stable, Staggered, Stunned, or Unconscious because it does not say so.
So, what are they? You cannot just say that they are not Helpless without saying what they are.
They are bound as per the description of Helpless.
They are not bound as per the description of Entangled. Entangled characters are also not held immobile and can still fight.
Grappling and Pinned do not have bound descriptions and specifically are forms of combat that require an attacker.
Only Helpless and Entangled have bound descriptions and Entangle creatures are not held immobile.
The rules are pretty clear here. But if you find a rule that contradicts this, please post it.