Guardian vs Executioner vs Headsman

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Guardian	Knight Revenant	Spirit	HP	Rare	HP 27% Place: Dungeons
Executioner	Knight Revenant	Magic	Defence	Rare	Defence 17% Place: All battles
Headsman	The Sacred Order	Spirit	Attack	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST
Guardian	60	6	19155	826	925	96	15	50	40
Executioner	60	6	14865 -4290	782 -44	1255 +330	89 -7	15	50	40
Headsman	60	6	10740 -4125	1354 +572	958 -297	100 +11	15	57 +7	30 -10

Guardian	Chop Formula: 4.8*ATK Attacks 1 enemy. Has a 50% chance of decreasing the duration of all buffs on the target by 2 turns.	Thunderclap Formula: ATK+0.03*HP Attacks 4 times at random. Each hit has a 30% chance of applying a [Block Buffs] debuff for 2 turns. Cooldown: 5 Block Buffs	Prayer Places a [Block Debuffs] buff and a [Counterattack] buff on this Champion for 2 turns. Also places a 15% [Continuous Heal] buff on this Champion for 2 turns. Cooldown: 5 Counterattack Block Debuffs Continuous Heal 15%
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.