On the one hand, I love metrics. I like Jira as a tool for obtaining metrics.
On the other hand, for gods sakes, don't compare teams using those metrics. Keep them internal and use them for retrospective discussions, not dick waving in front of management.
That basically summarizes my awful 15-page paper on Agile metrics from my grad program that I alluded to in my comment to @ben
Metrics are a sharp tool. Easy to cut yourself.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.