Rearguard Sergeant vs Grappler

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Rearguard Sergeant	Dwarves	Force	Defence	Epic	HP 33% Place: All battles Element: Force
Grappler	Skinwalkers	Spirit	Defence	Rare	HP 19% Place: All battles Element: Spirit

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Rearguard Sergeant	60	6	18495	859	1211	97	15	50	75	0
Grappler	60	6	14700 -3795	859	1189 -22	94 -3	15	50	30 -45	10 +10

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%
Grappler	Hoodoo Formula: 2.3*ATK Attacks 2 times at random. Has a 15% chance of placing a 15% [Weaken] debuff for 2 turns. Weaken 15%	Soul Sizzle Formula: 3.7*ATK Attacks 1 enemy 2 times. Each hit has a 50% chance of placing two 2.5% [Poison] debuffs for 2 turns. Cooldown: 4 Poison 2.5%	Envelop Places a [Shield] buff on all allies equal to 20% of their HP and a 15% [Reflect Damage] buff on all allies for 2 turns. Cooldown: 5 Shield Reflect Damage 15%