Is the Concussive Bomb skill still worth using for non-lightning damage classes?

When I last played a demolitionist class the Concussive Bomb skill still has a 100% chance to stun its targetson max rank . Now it only has a 25% chance to stun at max rank.
Should I still keep it or should I put the skill points in other skills?

If you’re not focusing on Lightning/Electrocute then I’d put the points elsewhere.