Cataphract vs Vasal of the Seal

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Cataphract	Banner Lords	Spirit	HP	Rare	HP 25% Place: Arena
Vasal of the Seal	Demonspawn	Force	HP	Legendary	HP 33% Place: All battles

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Cataphract	60	6	18330	991	815	97	15	50	40	0
Vasal of the Seal	60	6	21315 +2985	870 -121	1288 +473	98 +1	15	50	40	20 +20

Skills comparison

Cataphract	Sure Strike Formula: 4.3*ATK Attacks 1 enemy. Has a 20% chance of placing a 50% [Decrease ACC] debuff on the target for 1 turn. Decrease ACC 50%	Fortify Places a [Block Debuffs] buff and a 60% [Increase DEF] buff on this Champion for 2 turns. Cooldown: 4 Block Debuffs Increase DEF 60%	Helmcleaver Formula: 3.9ATK+0.1HP Formula: -1 Attacks 1 enemy. Will ignore DEF if the target has less than 50% HP. Damage increases according to this Champion's MAX HP. Cooldown: 6	-
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.]