ozchandler said:
I'm assuming then that the parrying weapon or shield hit points are reduced after a successful parry result, damage rolled normally, minus the AP.
Is that correct?
No, at least not according to my reading of the rules.
In reference to a successful parry against a successful attack, page 51 from the Core book states:
"Attack Succeeds but AP of Parrying Weapon/Shield is Deducted from Damage: The parry is at least partially successful. The attack still causes damage, however, the damage is reduced by the AP of the parrying weapon or shield."
There's nothing to indicate that any damage left over after the AP of the parrying weapon is deducted is applied exclusively to that weapon. In fact, targeting the weapon in order to damage it is one of the four options listed as "precise attack" on page 49 of the Core Book:
"The attacker declares that he is attempting to attack the target's held weapon or shield. If the attack is successful, any damage is dealt directly to the opponent's weapon, using the rules for attacking inanimate objects in the Adventuring chapter on page 93."
The only published combat example involving a successful attack versus a successful parry is given on page 67 of the GM guide:
"Cross-referenced on the Parry Table, Jurgen's attack succeeds for normal damage, but is reduced by twice the Baron's Great Sword AP. Jurgen's damage roll is 7 points, so the Baron easily turns Jurgen's attack."
While it might seem that a weapon used to block another weapon should take damage before any is applied to the defender, hitting a weapon used to parry so hard that it causes the defender's wrists to bend, allowing some damage to get through without damaging the weapon itself, is a perfectly reasonable scenario. Furthermore, the amount of AP deducted from attack damage varies from 1/2 x AP or 2 x AP depending upon level of parry success. Does 1/2 x AP imply that the defender parried in a way that is particularly destructive to his weapon or does it imply that less attack damage was diverted? The latter possibility makes more sense to me.
It is unfortunate that rules for weapon breakage are not explicitly covered in the rules. It should at least have been given as an optional rule. In other games, damage to a weapon used to parry an attack is treated as a probabilistic event.
I hope this is helpful. Perhaps my explanation will elicit responses from those on this forum who work for Mongoose or had a hand in MRQ's design, if my interpretation of the rules is not correct.