Class wise, I'd agree. But across subclasses, you can throw any bolt grenade around a corner, and it'll do the work for you. At least other grenades take an extra mental hoop to jump through when it comes to predicting where a target is, and either positioning it on a wall or bouncing it around a corner. It's not much, but its better than burning someone you could even see to finish off a defenceless target you can see through walls. Or even peeking, throwing a grenade, running, and letting the tracking land a stick. That's not debatable imo