They don't bring tasers to gunfights, nor apparently to traffic stops.Doubtful. Tasers are huge in law-enforcement now because of the potential for non-lethal outcomes in situations where lethal force may have been the only prior choice (emotionally disturbed person threatening suicide with a knife being a prime example).
You reckon cops don't debate which calibre is best for stopping badguys? And by stopping, I mean with lethal force.