Tournament data is exported to List Juggler. List Juggler does not connect to the tournament software itself. Only certain softwares can export to List Juggler in the right format (Cryodex being the main one) so it takes time for data to be uploaded because (a) it has to be done after the tournament and (b) the data might have be made up in other software or in the correct format if needed.
As for the actual list data, it depends on whether the TO entered that themselves. As you can imagine, entering all the lists from a 128 player event takes a while... also with List Juggler you can add lists straight from some of the squad builders so a lot of TO's leave players to enter their own squads outside of say, the top 16.