The skill description of Exploding Palm reads:
Cause a target to Bleed for 745% weapon damage as Physical over 9 seconds.
The description of its Impending Doom rune reads:
Increases the duration of the Bleed effect to deal 745% weapon damage as Physical over 15 seconds.
If the rune changes the skill to do the same damage over more time, doesn't it effectively decrease the skill's DPS? And if so, what is the benefit of this rune? Just to have a bigger time window for the explosion to take effect?