SHP heals 30. - no costs.
MHP heals 40. - 1 random.
LHP heals 60. - 2 randoms.
SMP heals 30. - no costs.
MMP heals 40. - 1 random.
LMP heals 55. - 2 randoms.
Why does LMP heals only 55?
Is it fair?

because the Large Health Pot was boosted to 60..
cause of people complaining.
it seems the Medical Package is fine as it is, but the health pot wasn't?

That's probably because:

1 - You can choose using it on 2 team members, instead of 1.

2 - The difference between the Potions and Packages would be considered small when at low level healing. For example, if you had an item that healed only the afflictions, being passible of only using it on one OR two characters wouldn't make a GREAT difference. On the other hand, when the amount healed raises, the need for a cap appears, and that's probably why this difference of 5 HP was set.

That's probably because:

1 - It heals Bleeding afflictions, which are more common than Poison Afflictions

(Jyouzu, Yuudai, Shoji vs. Niwa, Sasori)

2 - You can choose using it on 2 team members, instead of 1.

3 - The difference between the Potions and Packages would be considered small when at low level healing. For example, if you had an item that healed only the afflictions, being passible of only using it on one OR two characters wouldn't make a GREAT difference. On the other hand, when the amount healed raises, the need for a cap appears, and that's probably why this difference of 5 HP was set.

1 more character uses BleeadingA. than PoisonA., this is not a good argument in my oppinion.
moreover, WoN could get new characters doing PoisonA.

(...)
1 more character uses BleeadingA. than PoisonA., this is not a good argument in my oppinion.
moreover, WoN could get new characters doing PoisonA.

Still, that does not change the fact that you can choose between 2 characters instead of 1. Now that's a big advantage.

That's probably because:
2 - You can choose using it on 2 team members, instead of 1.

I can name a disadvantage for this aswell.
if you use a Medical package on someone, and they kill that character first, it's completely useless.

If you have a health pot on the same person you'd be able to heal him.
but that's just a guess...

That's probably because:

1 - It heals Bleeding afflictions, which are more common than Poison Afflictions

(Jyouzu, Yuudai, Shoji vs. Niwa, Sasori)

Actually there are the same number of skills with poison affliction as bleding affliction

Jyouzu, Yuudai, Shoji vs Niwa, Sasori, Kao
Katana of Niiro vs Poisonous Darts

(...)

Actually there are the same number of skills with poison affliction as bleding affliction

Jyouzu, Yuudai, Shoji vs Niwa, Sasori, Kao
Katana of Niiro vs Poisonous Darts

Oh, yeah! I forgot about Kao. My bad.
(EDITING my post)

Now, we have the same number of Bleeding Affliction & Poison Affliction.

I think that it is fair because the LMP can save 1 of 2 character and the LHP can save only 1 of 1, you cant decide who to save so it is ok that it heals a little bit more than the LMP

It is fair because it cost the most and it really doesn't make a big difference.