I recently had the pleasure of being able to compare, head-to-head (or should I say shoulder-to-shoulder) the bbq from Weanie Beanie in Shirlington to the pork you can purchase from Harris Teeter which is from North Carolina. They are both Eastern NC style bbq, no tomato sauce, just marinated in a vinegar-based sauce.
The Weanie Beanie sandwich is nice and hot and well-seasoned and tasty. However, if you want to have that smokey flavor that is essential to good bbq in the background, then the tray of Harris Teeter bbq is more like the real deal. Also, there is more variation in the size of the pieces of chopped pork,as where the WB sandwich is very finely minced throughout.
This one goes to the supermarket.