Warlocks get 30% reduction?

Warlocks get 30% reduction?
www.euwowgold.fr
Hmmmm...doesn't seem that way if you read the tool tips.

Soul Link: "20% of all damage taken is split with your summoned demon"

Doesn't this mean it's a 10% reduction? It doesn't say 20% of all damage taken is directed to your summoned demon, it says split.

Unending Resolve Glyph: "Unending Resolve can no longer be activated, but passively provides 10% damage reduction from all sources."