Visionary vs Executioner vs Headsman

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Visionary	Dark Elves	Spirit	Support	Epic	Speed 24% Place: Dungeons
Executioner	Knight Revenant	Magic	Defence	Rare	Defence 17% Place: All battles
Headsman	The Sacred Order	Spirit	Attack	Rare	-

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Visionary	60	6	15360	1277	1002	98	15	50	30	15
Executioner	60	6	14865 -495	782 -495	1255 +253	89 -9	15	50	40 +10	0 -15
Headsman	60	6	10740 -4125	1354 +572	958 -297	100 +11	15	57 +7	30 -10	0

Skills comparison

Visionary	Ectoplasm Formula: 3.2ATK Formula: 0.15MAX_STAMINA Formula: 0.15*MAX_STAMINA Attacks 1 enemy. Has a 30% chance of decreasing the target’s Turn Meter by 15%. This chance increases to 100% if the target is under a [Decrease C. RATE] debuff or a [Decrease C. DMG] debuff.	Haunt Formula: 3.3*ATK Attacks all enemies. Has a 75% chance of placing a 30% [Decrease C. RATE] debuff and a 25% [Decrease C. DMG] debuff on all enemies for 2 turns. Cooldown: 4 Decrease C. RATE Decrease C. DMG	Dark Dealings Formula: 0.15*MAX_STAMINA Places a 30% [Increase C. RATE] buff and a 30% [Increase C. DMG] buff on all allies for 2 turns. Also fills the Turn Meters of all allies by 15%. Cooldown: 4 Increase C. DMG Increase C. RATE 30%
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.