Going back to what I posted several times; as it compares to HD/SD it certainly is inferior in most every single category in the hands of the average user as I've already posted.
But, I'll take the bait. In what ways is a shotgun better than an AR for HD? Go ahead and list the pros and cons and we'll have us a debate about it. If you say that it doesn't penetrate as much, you don't even have to aim it or the sound of the pump scares bad guys off I'm not having a discussion with you.