I know this is 2 days old @Mr_Scooty can you please PM me by how you compute formulas on PVP DMG Reduction?
Is this correct? 1000 for Armor and 100 for Resist? Why? 
As I created a new build I calculated my DMG Reduction and I got 99%
I responded to your PM.
Damage reduction is multiplicative and not additive.
PvP Gear armor (Chest, Ring, Helm and Amulet)
–>250x4 warrior 1000 AR
–>150x4 Rogue 600 AR
–>75x4 wizard 300 AR
PvP Gear resist is 100
–>10 Chest, 10 Ring, 10 Helm, 10 Amulet, 10 Pet
–>50 for trophy
I can give additional examples if others would like me to post on the forum.