With the fares they charge for the schedule they operate they’ve done well to get that many. I see the Tuesday flight has been cancelled the last two weeks in a row, I guess we can take from that most people are travelling Thu-Sun in either direction and those loads are better (although still very poor).
Re Cityjet I think their route was daily. I think it was also cheaper. Much more attractive to business pax than flying in the middle of the day on a Tuesday or Thursday