The first clues on Healing Power have already shown but they need to be confirmed!
As this already is enough to always choose All Attack over any other Stat in the Stat Growth I know that currently everybody is telling how strong he is by posting his HP.
Well this was the original Post I wanted to made and so I will fit it in here just to give full information regarding the All Attack topic.
Before we start lets us clarify different things:
eHP = effective HP
Your effective HP are multiplied with your DMG Mitigation. This value shows you how much raw damage you can tank before you are dead.