100k Penetration, meme or error?

From PTS

Medium – Lamp Knight’s Art

  • 2 – Adds 1096 Maximum Stamina
  • 3 – Adds 1096 Maximum Stamina
  • 4 – Adds 129 Weapon and Spell Damage
  • 5 – Gain 100000 Offensive Penetration. Reduce your damage done by 46%.