But not everyone specs for max recovery, and your theory would be correct if a you were another warlock with max recovery, and a solar splash damage recovery. Besides when you think about it 10 seconds, or 8 whatever you're trying to say is, a long time to be one shot. I could go on forever, about this, but here's how I'm going to sum it up. The average guardian (a Titan with a half bar of armor) has about 200 HP, fire bolt does 155 HP of damage, the burn effect lasts around 3 to 4 ticks dealing 8 HP per tick. In the end a guardian is left with (3 ticks) 21HP.