Eclan,
The post is about YSSY in general, granted started off about customers, but due a pilots forum (!) has now encompassed our side of things.
Yes LHR is shabby, as you say ATC outstanding, but from chocks to exiting the airport (via crew bus meeting us on stand) it can be as little as 30 mins. Lately I queued for an hr (as op crew) simply in YSSY quarantine, all said we were about 1:30 cx - getting out of the place.
As a pax LHR is depressing due its age, but again I can be out a whole lot quicker than SYD.
SYD ATC undoubtably under too many constraints, but when A/C are forced to divert due RVR's insuff 34 & yet workable 16 (early am fog) you gotta wonder. On that occasion seemingly because not being able to get their act together in time before a/f closed completely.