Grandmaster vs Executioner vs Headsman

Overall comparison

HERO	Fraction	Element	Type	Rarity
Grandmaster	Banner Lords	Magic	HP	Rare
Executioner	Knight Revenant	Magic	Defence	Rare
Headsman	The Sacred Order	Spirit	Attack	Rare

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST
Grandmaster	60	6	16185	892	1057	100	15	50	40
Executioner	60	6	14865 -1320	782 -110	1255 +198	89 -11	15	50	40
Headsman	60	6	10740 -4125	1354 +572	958 -297	100 +11	15	57 +7	30 -10

Grandmaster	Hammerblows Formula: 1.5*ATK Attacks 1 enemy 3 times.	Steel Crusher Formula: 7.5*ATK Attacks 1 enemy. Has a 40% chance of placing a 25% [Decrease ATK] debuff on the target for 2 turns. Cooldown: 4 Decrease ATK 25%	Demoralizing Display Formula: 7.4*ATK Attacks 1 enemy. Has a 50% chance of placing a [Provoke] debuff on the target for 1 turn. Cooldown: 4 Provoke
Executioner	Shield Bash Formula: 5*ATK Attacks 1 enemy. Has a 15% chance of placing a [Stun] debuff for 1 turn. Stun	Tumult Formula: 2ATK+2.4DEF Formula: 0.2*MAX_STAMINA Attacks all enemies. Decreases the Turn Meter by 20%. Has a 50% chance of placing a 15% [Decrease SPD] debuff for 2 turns. Cooldown: 4 Decrease SPD 15%	Schiltron Places a 60% [Increase DEF] buff and a [Counterattack] buff on this Champion for 3 turns. Cooldown: 7 Counterattack Increase DEF 60%
Headsman	Public Execution Formula: 1.57*ATK Attacks 1 enemy 2 times. Each hit has a 10% chance of placing a [Fear] debuff for 1 turn. Fear	Headman's Due Formula: 3.7*ATK Attacks all enemies. Has a 30% chance of placing a 100% [Heal Reduction] debuff for 2 turns. Cooldown: 3 Heal Reduction 100%	Judged Guilty [P] Formula: 0.15*DMG_MUL Inflicts 15% more damage to targets under [Heal Reduction] debuffs.