It's very simple.
The T4 gloves are better if you have the set. 2 or 4.
Then it gives the follow bonuses:
(2): Increases the amount healed by your Judgement of Light by 20.
(4): Reduces the cooldown on your Divine Favor ability by 15 sec.

Greetz Swetch
Lvl 70 Healadin, Kul Tiras.