Electrocute outclasses due to early game access.
I really want to use predator and dark harvest, but im at such a disadvantage early game and or when pred is on the long cd...
I think if pred and dh had a way to be stronger early game without being busted later then id consider them.
For now ima keep taking electrocute as a jungler because any skirmish I get into before my first back will benefit from it, whereas the other 2 are useless for far too much of the game. Or at least..outclassed.
Also, predator and dark harvest have too many rules to be effective. Pred u have to channel w.o casting or taking damage, darkharvest u need to pick up a soup and use it before it runs out, not to mention it needs to be stacked.
Electrocute doesnt have these restrictions and is probably stronger in 75% of games and situations.