yes, Broadband,you are correct. It does all boil down to experience.....BUT....In H.K. ,they now not only have a lot of inexperienced controllers,we are burdened with a lot of really below average controllers,some bordering on incompetent, whose command of English is very poor and who cannot ad-lid,can't think outside the box,have no idea of what common sense means and simply,really don't know what A.T.C. is trying to achieve. This is fact, not just a racist thing.
Things will only get worse as the experienced expats leave. By 2015 ,I think that there will only be a dozen or so left . Good luck,keep a sharp look-out.