Which is more powerful?

[Kathos]

What he said, it seems as though the translation or wording is a bit misleading =)
- Battle Alchemy
Requirements: successfully ignite or poison an enemy troop
Level 1 - +10% to burning/poisoning post-effect damage / 50 successfully poisoned/burned enemy troops
Level 2 - +20% to burning/poisoning post-effect damage / 150 successfully poisoned/burned enemy troops
Level 3 - +30% to burning/poisoning post-effect damage / 400 successfully poisoned/burned enemy troops
From DGDobrev's info page.