Hardscale vs Gravechill Killer

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Hardscale	Lizardmen	Magic	Defence	Uncommon	-
Gravechill Killer	Undead Hordes	Magic	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Hardscale	60	6	13050	716	1167	99	15	50	30	0
Gravechill Killer	60	6	13545 +495	1233 +517	892 -275	96 -3	15	50	30	10 +10

Hardscale	Ambush Formula: 4.6*ATK Attacks 1 enemy. Has a 25% chance of placing a 15% [Decrease SPD] debuff for 2 turns. Decrease SPD 15%	Shocking Wound Formula: 7*ATK Attacks 1 enemy. Places a [Stun] debuff if the target has a [Decrease SPD] debuff. Has a 20% chance of placing a [Stun] debuff for 1 turn if the target has no [Decrease SPD] debuffs. Cooldown: 4 Stun	-
Gravechill Killer	Freezing Toxin Formula: 3.9*ATK Attacks 1 enemy. Has a 40% chance of placing a 5% [Poison] debuff for 1 turn. Poison 5%	Blood Chill Formula: 6.8*ATK Attacks 1 enemy. Has a 75% chance of placing a 30% [Decrease DEF] debuff for 2 turns. Has a 75% chance of placing a 60% [Decrease DEF] debuff instead if the target is under a [Poison] debuff. Cooldown: 4 Decrease DEF 60% Decrease DEF 30%	Icy Veins Formula: 2.65*ATK Attacks 1 enemy 2 times.Each hit places a 2.5% [Poison] debuff for 2 turns. Places a 5% [Poison] debuff instead if the target is under a [Poison Sensitivity] debuff. Cooldown: 5 Poison 2.5% Poison 5%