Vasal of the Seal vs Marius the Gallant

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Vasal of the Seal	Demonspawn	Force	HP	Legendary	HP 33% Place: All battles
Marius the Gallant	Skinwalkers	Void	Defence	Legendary	Defence 35% Place: All battles

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Vasal of the Seal	60	6	21315	870	1288	98	15	50	40	20
Marius the Gallant	60	6	19815 -1500	716 -154	1542 +254	110 +12	15	50	30 -10	20

Skills comparison

Vasal of the Seal	Abyssal Seal Formula: 0.25*HP Attacks 1 enemy. Places a [HP Burn] debuff on the target for 2 turns if they are under a [True Fear] debuff or a [Decrease ATK] debuff. Also places a [Shield] buff on this Champion for 2 turns equal to 10% of their MAX HP. Shield HP Burn	Infernal Darkness Formula: 0.27*HP Attacks all enemies. Has a 75% chance of placing a [True Fear] debuff and a 50% [Decrease ATK] debuff for 2 turns. Cooldown: 5 True Fear Decrease ATK 50%	Daemon Possession Balances the HP of all allies. The HP levels of all allies will be brought up to the level of the ally with the highest HP. After balancing HP, grants an Extra Turn. Cooldown: 6	Legion of Doom [P] Formula: -0.2DMG_MUL Formula: 0.2DMG_MUL Receives 20% less damage from Champions from the Banner Lord, High Elf, and Sacred Order Factions. If there are 2 or more Demonspawn Champions on the team alongside this Champion, increases the C. DMG of all Demonspawn Champions on the team by 20%. [C. DMG increase only works when this Champion is alive.]
Marius the Gallant	Auric Lance Formula: 2.5*DEF Attacks all enemies. Has a 35% chance of placing an [Enfeeble] debuff for 1 turn. Enfeeble	Death or Glory Formula: 1.2DEF+0.03TRG_HP Attacks all enemies 3 times. Each hit decreases the duration of all enemy buffs by 1 turn. Cooldown: 4	Galloping Thunder Places a 50% [Increase ACC] buff and a 60% [Increase DEF] buff on all allies for 3 turns. Then places a [Stun] debuff on the enemy with the highest Turn Meter for 1 turn. Finally, grants an Extra Turn. Cooldown: 6 Stun Increase ACC Increase DEF 60%	Steadfast Knight [P] This Champion is immune to Turn Meter reduction effects from enemies and [Decrease SPD] debuffs. Whenever an enemy changes Form or attempts to decrease this Champion's Turn Meter, counterattacks using this Champion's default skill.