Let's face it, even cooking a brisket at 400* for 4 to 5 hours is a "long time" compared to grilling up burgers or dogs. You don't need hours for steaks, burgers, pork chops, etc. to make them tender. Brisket was and still is a relatively cheap cut of meat because it must be cooked for long periods of time to become tender.
So, while hot and fast may be hot, I still don't think 5 hours is a fast cook.
Operation BBQ Relief Founding Member - I am Obsessive Compulsive about BBQ. Google it.