
you can stack mana but you can't stack faith (minus piety). This can be quite an important factor also and they can perform multiple roles so i dont think they are so much better imo.
i knew you would knew/say that - and i saw that last game but still i have my answer ready
 
 Faith can't be stacked but Aggresion is Twice cheper than Scourge and both units can cast their main spells twice only at full mana-faith.
And you can count how many Martyrs/Devotion you need to fill Priest to 6 faith (even starting with 0) and Mage to 12 (lets say from 4 - considering recovery skill)






 .
.
 Priest aren't super easy to use as you need to setup many things such as targets for your transfer and sometimes a bad omen is better than a spiritual aggression. People who compare them to lion mages are missing the part that they are MUCH more complicated.
 Priest aren't super easy to use as you need to setup many things such as targets for your transfer and sometimes a bad omen is better than a spiritual aggression. People who compare them to lion mages are missing the part that they are MUCH more complicated.