Rotting Mage vs Rearguard Sergeant

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Rotting Mage	Undead Hordes	Spirit	Support	Rare	Speed 13% Place: Crypts
Rearguard Sergeant	Dwarves	Force	Defence	Epic	HP 33% Place: All battles Element: Force

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Rotting Mage	60	6	16350	1068	870	100	15	50	30	15
Rearguard Sergeant	60	6	18495 +2145	859 -209	1211 +341	97 -3	15	50	75 +45	0 -15

Rotting Mage	Gelid Beam Formula: 4*ATK Attacks 1 enemy. Has a 25% chance of placing a [Freeze] debuff for 1 turn. Freeze	Frost Armaments Places a 25% [Increase ATK] buff on all allies for 2 turns. Places a 30% [Increase DEF] buff on this Champion for 2 turns. Cooldown: 4 Increase ATK 25% Increase DEF 30%	Mental Overload Formula: 4.4*ATK Attacks 1 enemy. Has a 75% chance of placing a [Stun] debuff for 1 turn. Cooldown: 4 Stun
Rearguard Sergeant	Crushing Impact Formula: 4*DEF Attacks 1 enemy. Has a 40% chance of placing a 60% [Decrease DEF] debuff for 2 turns. Decrease DEF 60%	Flail Master Formula: 3.6DEF Formula: 0.25DEALT_DMG Attacks all enemies. Has a 50% chance of placing a 50% [Decrease ATK] debuff for 2 turns. Heals this Champion by 25% of the damage inflicted. Cooldown: 4 Decrease ATK 50%	Fend Them Off Places a 50% [Ally Protection] buff and a 15% [Continuous Heal] buff on all allies except this Champion for 2 turns. Cooldown: 5 Continuous Heal 15% Ally Protection 50%