The tooltip of this skill implies that the base amount healed is 3,320 with a 1:1 scale with Healing Power. This is not the case!
Some observations:
With 0 healing power
Tooltip reads: “Healing: 3,320”
Heals for: 3,275
With 300 healing power
Tooltip reads: “Healing: 3,620”
Heals for: 3,425
With 1098 healing power
Tooltip reads: “Healing: 4,418”
Heals for: 3,824
As you can see the base amount is actually 3,275 and the amount healed is equal to (0.5 x Healing Power) + 3,275.
I will be editing the Wiki page, shortly, with this information.
Thanks for reading,
Acandis
Edit: These test results were gathered in the Heart of the Mists. I am not sure if this is an issue outside HotM. Would appreciate if anyone could confirm, since I don’t have a level 80 warrior.