Siegebreaker vs Avir the Alchemage

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Siegebreaker	Ogryn Tribes	Spirit	Attack	Rare	-
Avir the Alchemage	Dwarves	Magic	Support	Rare	-

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Siegebreaker	60	6	14040	1211	881	90	15	50	40	0
Avir the Alchemage	60	6	16680 +2640	881 -330	1035 +154	102 +12	15	50	30 -10	10 +10

Siegebreaker	Pelting Blows Formula: 1.5*ATK Attacks 1 enemy 2 times.	Electrocute Formula: 6.6*ATK Attacks 1 enemy. Has an 80% chance of placing a [Block Active Skills] debuff for 1 turn if this attack is critical. Cooldown: 3 Block Cooldown Skills	Heavenly Roar Formula: 4.6ATK Formula: TRG_STAMINA0.3 Places a 30% [Increase C. RATE] buff on this Champion for 2 turns, then attacks all enemies. Has a 50% Chance of decreasing the Turn Meter by 30% if this attack is critical. Cooldown: 5 Increase C. RATE 30%
Avir the Alchemage	Flask of Vitreol Formula: 4.7*ATK Attacks 1 enemy. Has a 30% chance of placing a 5% [Poison] debuff for 2 turns. Poison 5%	Corroding Catalyst Formula: 4.2*ATK Attacks all enemies. Has a 50% chance of placing a 25% [Decrease ATK] debuff for 2 turns. Also places a 15% [Decrease SPD] debuff for 1 turn on targets under [Poison] debuffs. Cooldown: 4 Decrease ATK 25% Decrease SPD 15%	Vitalizing Potions Formula: 0.15MAX_STAMINA Formula: 0.15HP Fills the Turn Meters of all allies by 15% and heals all allies by 15% of this Champion’s MAX HP. Cooldown: 6