JIRA definitely comes down to implementation and policy. I've used it in places and it has been amazingly helpful as a developer, to the point I don't know how we did anything before it.. Then going to a place that totally misuses it and causes me to triple-handle everything.

If your company is large and you're looking at JIRA, pay a consultant to come in, set it up for your different teams and train people. It's worth the money, otherwise you won't see the benefit JIRA brings.