As far as I know, in Greed, all units are equally matched in the other team.
Playing as Ogres, lately I see that my shamans often do not cast regeneration to my units.
However, Librarians always cast regeneration to themselves and their allies.
This is crucial, and a reason for a defeat.
1 shaman against 1 librarian. Librarian casts regen, shaman does not. Therefore librarian wins (even with a munchkin)
1 shaman with 2 ogres, no enemies in front but units wounded. No regen. Humans makes a librarian and kills them.
1 librarian with 2 knights, wounded. Librarian casts regen. Ogres make some troops and die because enemy is full life.
The only situation I found in which shaman did regen was with a brawler. Shamans did regen to brawler and themselves.
I have checked the scripts in the edit map, and everything looks fine, scripts look the same.
I have no idea why this happens but it is very unfair for ogres