Rector Drath vs Grunch Killjoy

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Rector Drath	Knight Revenant	Force	Support	Epic	Resist 55 Place: Doom tower
Grunch Killjoy	Ogryn Tribes	Force	Support	Epic	Defence 30% Place: Crypts

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Rector Drath	60	6	17010	1035	1134	109	15	50	30	0
Grunch Killjoy	60	6	18000 +990	969 -66	1134	102 -7	15	50	30	15 +15

Skills comparison

Rector Drath	Scepter of Authority Formula: 4*ATK Attacks 1 enemy. Has a 35% chance of placing a 50% [Decrease ATK] debuff for 2 turns. Decrease ATK 50%	Necro Mutation Formula: 0.2*HP Heals all allies by 20% of this Champion's MAX HP. After healing, places a [Perfect Veil] buff for 2 turns on all allies with full HP. Places a 15% [Continuous Heal] buff for 1 turn instead on all allies with less than 100% HP. Cooldown: 5 Continuous Heal 15% Perfect Veil	Spirit Form Formula: 0.6TRG_HP Formula: 0.6MAX_STAMINA Revives a single ally with 60% HP and fills their Turn Meter by 60%. Places a [Perfect Veil] buff on them for 3 turns. Cooldown: 6 Perfect Veil	Master of Ghosts [P] Formula: 0.1*TRG_HP Formula: 50 Whenever an ally under a [Veil] or [Perfect Veil] buff gets a turn, heals them by 10% of their MAX HP. Also increases the RES of allies under [Veil] or [Perfect Veil] buffs by 50. [Will only increase RES once per ally if there are multiple Rectors on the team.]
Grunch Killjoy	Mace of Foulness Formula: 3.6*ATK Attacks 1 enemy. Has a 40% chance of placing a [Block Buffs] debuff for 1 turn. Block Buffs	Kindle Soulfire Formula: 4.2*ATK Attacks all enemies. Has a 50% chance of placing a [Bomb] debuff that detonates after 1 turn. Cooldown: 5 Bomb	Hex Eater Formula: REL_TRG_DEBUFF_COUNT-1 Removes all debuffs from all allies, then places one 15% [Continuous Heal] buff for 1 turn on each ally for every debuff removed from them. Cooldown: 6 Continuous Heal 15%	Madcap [P] Formula: 0.1*MAX_STAMINA Fills the Turn Meters of all allies by 10% whenever a [Bomb] debuff detonates on an enemy.