Yes the perfect D is 941. Either he was lying or he got ripped.
Tal Rasha's Guardianship
Lacquered Plate Defense: 833-941 (varies)(Base Defense: 433-541)
Required Level: 71
Required Strength: 84
Durability: 55
+400 Defense
Requirements -60%
Magic Damage Reduced By 15
Cold Resist +40%
Lightning Resist +40%
Fire Resist +40%
88% Better Chance Of Getting Magic Items
+10% Faster Cast Rate (2 Items)