Suiren vs Heartpiercer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Suiren	Shadowkin	Force	Attack	Epic	Accuracy 60 Place: Dungeons
Heartpiercer	Dark Elves	Force	Attack	Uncommon	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Suiren	60	6	14370	1310	1035	99	15	50	30	15
Heartpiercer	60	6	12555 -1815	1057 -253	859 -176	89 -10	15	50	30	0 -15

Suiren	Lotus Kiss Formula: 2.2*ATK Attacks 1 enemy 2 times. Each hit has a 40% chance of placing a 5% [Poison] debuff for 2 turns. Poison 5%	Downsize Formula: 3.1*ATK Attacks 1 enemy 2 times. Each hit has a 60% chance of placing a 25% [Weaken] debuff for 2 turns. Cooldown: 3 Weaken 25%	Confusion Reigns Formula: 4*ATK Attacks all enemies. Has a 60% chance of placing a 60% [Decrease DEF] debuff for 2 turns. Cooldown: 4 Decrease DEF 60%
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%	-