We have come across a complication in the Armor as DR rules, when it comes to whether or not DR still applies to the Critical Defense roll if the DR is bypassed by the attack. One example is a person using a magic longsword criticals against a man wearing regular armor: the armor DR is bypassed by the magic sword, so does the man still add that DR to his roll to prevent the critical hit?
SOrry if this has came up: didn't see any posts talking about the issue.