How much does the overenchanting influence the healing power?

I found an experiment here but it has the pictures removed so I can't read it anymore.

So I was thinking: how much does the overenchanting influence the healing power? For example, would getting a homu +10 (D-grade) get me a better healing power over a +0 R weapon?

 

The more mattack the weapon has, the more healing power you get, also I guess (I'm not sure about this one) that shot bonus helping healing power (same as sapphire)

 

The way I remember it from the Interlude is that m.atk affected the healing power very little... Like difference between homu and AM healing power being like 50 or so which is irrelevant.

As the experimentarium post I've shared above they say the overenchanting bonus affects the healing significantly, however the numbers have disappeared

 

The following formula is from this topic: https://4gameforum.com/threads/506577/

It's basically a very close formula to the one in game so you can know more or less what's affecting healing power:

Without shots:​

Heal = base_heal + weapon_bonus​

Where:​

base_heal = (power + sqrt(mAtk) + staticHealBonus) * percentHealBonus
power​

- Power of the skill used​

sqrt ​

- Root or also known as x^1/2 ​

mAtk​

- The magic attack on toon​

staticHealBonus​

- Static bonus for healing such as the ones from sets​

percentHealBonus​

-Bonus from healer skills such as Prayer​

weapon_bonus = lvlMod * weapon_mAtk * MENmod​

, if weapon_bonus > base_heal, then weapon_bonus = base_heal.​

lvlMod =​

(lvl+89+5,5*(lvl-99))/100. if {lvl-99}<0, then {lvl-99}=0.​

weapon_mAtk​

- Value of mattack from weapon. Depending on weapon used and level of enchantment, this parameter varies​

MENmod​

- Modifier MEN, the more MEN the better healing power​