Heartpiercer vs Signy of Highshield

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Heartpiercer	Dark Elves	Force	Attack	Uncommon	-
Signy of Highshield	Banner Lords	Magic	HP	Epic	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Heartpiercer	60	6	12555	1057	859	89	15	50	30	0
Signy of Highshield	60	6	20640 +8085	749 -308	1178 +319	97 +8	15	50	45 +15	0

Heartpiercer	Perforate Formula: 4.6*ATK Attacks 1 enemy.	Sight In Formula: 7.6*ATK Attacks 1 enemy. If the hit is critical, places a 25% [Increase ATK] buff on this Champion for 2 turns. Cooldown: 4 Increase ATK 25%	-	-
Signy of Highshield	Platebreaker Formula: 0.12HP Formula: 0.2DEALT_DMG Attacks 1 enemy 2 times. Each hit has a 25% chance of placing a 50% [Decrease RES] debuff for 2 turns. Each hit also heals this Champion by 20% of the damage inflicted. Decrease RES	Highshield's Defiance Formula: 0.24*HP Attacks all enemies. Before attacking, has a 75% chance of removing 1 random debuff from all allies. After the attack, has a 75% chance of removing a random buff from all enemies. Cooldown: 4	Just Cause Places a 50% [Increase RES] buff and a 30% [Reflect Damage] buff on all allies for 2 turns. Cooldown: 6 Reflect Damage 30% Increase RES	Hero of the People [P] When this Champion is under a [Reflect Damage] buff and an enemy attempts to place a debuff, has a 20% chance to reflect the debuff back onto the attacker.