"While Eddard Stark is defending, lower the attacking player's claim to 0."
Am I right in applying reasoning similar to that given by ktom in this thread to conclude that other claim modifiers are applied at the same time as Eddard's ability and so are not set to zero? If that's the case, wouldn't the card have been more clear if it said something like "the claim value on the attacking player's plot card is 0?" If it's not the case, what is the alternate interpretation?