You can read about the background story on the website as I am not going to write it about it here.
What you will learn from this post is the statistical differences between the two sides.
Warrior

Superion Guardians
-[Passive] Physical Defense Increases by 1.05 times
-[Active] Physical Attack Increases by 1.40 times
Temple Knights
-[Passive] Physical Attack Increases by 1.05 times
-[Active] Physical Defense Increases by 1.40 times
Mage

Superion Guardians
-[Passive] Magic Critical Chance increases by 1.15 times
-[Active] Magic Defense Increases by 2.50 times
Temple Knights
-[Passive] Magic Defense increases by 1.3 times
-[Active] Magic Attack Increases by 1.3 times
Ranger

Superion Guardians
-[Passive] Physical Attack increases by 1.05 times
-[Active] Movement Speed Increases by 40%
Temple Knights
-[Passive] Physical Critical Chance increases by 1.15 times
-[Active] Attack Speed increases by 80%
Cleric

Superion Guardians
-[Passive] Magic Attack / Heal Amount increases by 1.03 times
-[Active] Increase Physical and Magic Attack by 1.20 times to the allies within 4 meters
Temple Knights
-[Passive] Heal Amount increases by 1.05 times
-[Active] Increase Physical Defense by 2 times and Magic Defense by 1.5 times to the allies within 4 meters