Cultural aspects have always existed in the application of class structures, and finance itself is merely the foremost designator of class in contemporary Western society. But anyway, as Christians, or as Quakers, we shouldn't recognise or accept such cultural, academic, or socio-economic heirarchies. For us there should be no such thing as 'social status', whether others calculate such a thing by financial or academic means. Our religion teaches that we are not to accept such things, nor should we perpetuate them. I think it's interesting that you feel that a janitor's job should be worth less than yours as a part time lecturer.
Any economic system pays based on supply and demand.
A janitor's job is much dirtier and physically harder than that of a part time lecturer. The amount of money paid to each depends upon the availability, willingness, and ability of people to do the job as well as the need for that job to be done. It is not a reflection upon your worth as a lecturer that the janitor gets paid more - it's just that there aren't that many folks looking for janitorial work, and the university needs to be a clean environment. I would say you're deceiving yourself if you think yourself to be anything but an equal. No, of course it doesn't.