Wait a second, does it stand literally for "The commercial harbour" or something like that ?
The English "Copenhagen" comes from the name in Low German. The words "Copen" iand "Köpen" are related to English "cheap"!
Apparently Copenhagen is more beautiful than Stockholm. Is this just blasphemy or is there actually some truth to this? :P
It's all in the eyes of the beholder. ;) To me as a Stockholmer born and raised, the question is all clear. But I'm very biased... :p