I never do PoB, it fcks up your commen sence when theoriecraft
Quote
The base duration of ignite is 4 seconds. The burning damage over time is 40% of the base damage of the hit of fire damage, per second.
assume you hit twice per second,
then,
100%more fireball damage results 440%total damage per sec, when target is ignited
(440%-100%-40%)/40%=you need 650%more burning damage, to get same effects as 100%more fireball damage