Fwib at [unixtime wrote:1204315932[/unixtime]One rule (Mace penetrates DR) applies to all DR
One rule (DR/- has no counter) applies to all weapons
alternatively:
One rule (DR/- has no counter) only applies to DR/-
One rule (Mace penetrates DR) only applies to the mace.
Either both rules apply to all of a group, or both only apply t one member of a group - or you can mix and match to suit the way you want the ruling to go....
The issue isn't whether they apply to an "entire group" or "one member."
One of them defines the effect of a
label that can be attached to a variety of items and objects.
The other defines a special effect that is
unique to one weapon.
Take a more homogenous example:
Rule A: Any weapon with the "flaming" property adds 1-6 fire damage to any target it strikes.
Rule B: Plottius DeVice's Flaming Longsword of Uberness adds 2-12 fire damage to any target it strikes.
Both rules define the effect for one member of a set (one property or one item) and both effects apply to all members of a set (any targets). But it's pretty obvious that Rule B is more specific than Rule A.