A couple of things evident from the thread;
1. Pilots often don't understand sequencing, yet always think they do. The most vocal are inevitably the ones who wouldn't lower themselves to sit in a centre and watch it being done/have it explained. Classic example is bitching about being sequenced behind a turboprop- as explained, the tp will go faster longer, and will actually go at least as fast (on average thru an approach) as an RPT-type jet, especially closer in to the field. There is also no wake turb issue with the tp in front, allowing better runway utilisation.
2. Sequencing is about ground speed. The controller converts that into an IAS/Mach, taking into account winds and levels, and issues instructions accordingly. Hearing speeds on the freq will not tell you the other guys groundspeed, unless he is on the same route at the same level.
3. Comparisons to LHR. Do I really need to explain it? Ban GA from your airport, enact highly prescriptive procedures such as exact speeds for every phase of the approach, hire 4 times as many controllers, only commence an approach from a hold, only depart for the airport with a controlled slot time etc. etc. and you may get a result that looks like LHR.
Anyway, carry on with the sledging.