It depends on the station and the progamming.
For example, the city closest to me has all ABC prime time shows in DD 5.1. The next city closest to me (which I can also pick up) has all ABC prime time shows in DD 2.0. This probably has something to do with the fact that the further away (DD 2.0) station has 2 subchannels where the closest (DD 5.1) station only has one.