Although pilots have a nice advantage in knowing how the system works, not all pilots make good controllers.
exactly. from what I've seen, being a controller is a MUCH harder job than being a pilot. Being a pilot doesn't mean you can work as a controller. (Granted, not all controllers can be pilots, either) but comparing the skills, intensity, and difficulties in each job, and I'd say that controlling is much harder.
I am just wondering how a line tech has spent so much time observing controllers, and why?