User blog comment:VGHS Zero/Dawnguard Armor/@comment-14027812-20131209014736

I guess it is because of the perk. While the perk is active, your heavy armor rating increases, including the rating that appear on the inventory when viewing other armor. I'd say the perk makes the Dawnguard Armor seem better, when it's not. A perk mess-up. What happens if you wear all four pieces of heavy Dawnguard Armor?