I am not a big fan of the original HBH in Munich, but the HbH in Pittsburgh is quite authentic. It can be very loud in the main hall, just like Munich, the food is OK, just like Munich, it is a good place to drink a lot of beer, and it is a wild time.
However, the HbH Pittsburgh gets high mark for having a wonderful beer garden patio, a heated terrace, and a private and quiet dining hall.