Justice is a fan-made global mod.

I'd like to add my two cents. Griffins are definitely better than Monks, that's a given. Anyone who doubts this should play The Witcher 3; there, a griffin is a boss that two powerful heroes struggle to defeat. How can you compare this monster to an ordinary warrior with magical skills? I would even phrase the question differently: Griffins > Knights? In Warcraft 3, for example, a griffin rider costs more than a regular knight. On the other hand, here we have just a griffin, without a rider, but still... Bears are definitely better than Bone Throwers. They are stronger even in the original game, even though their tier is formally lower. But Bears > Priests is debatable; I would say they are roughly equal. Hydras are definitely better than Witches. A witch is just a small person with a whip; she simply cannot stand on tier 6 physically. Her health is incomparable, and no magic can fix that. If we are talking about exceptionally powerful magical characters, then it's the heroes themselves, and certainly not ordinary human units. Because heroes are invulnerable; you can't even physically attack them, unlike witches. As for the hydra, it's a giant monster; let's not forget that it's a tier 7 unit in Heroes 3 and 4 (and the second-to-last tier in Heroes 2, if I remember correctly). The closest analogue to a hydra in terms of size and power is a war elephant, which is clearly a much more serious threat than a knight (and the hydra's tier is lower, which is funny). Centaurs are obviously better than Orcs. A centaur is physically much larger and more agile. In fact, it's light cavalry, its place is somewhere near a knight, with a correction for being lighter (about twice as weak), but definitely not in the lower tiers. Therefore, I would say that Centaurs > Shamans as well.