"Heathrow arguably the best ATC in the world"
'I'd argue Chicago, maybe Schipol (haven't been to Schipol in quite some time though).'
Pfffft!
Lets see how they would go in the middle of holding and sequencing at the busiest time of the night with 2 American P3's operating 'tactical due regard' (i.e. we will do what we want, when we want and how we want) right in the middle of your traffic at FL145, effectively blocking the most critical levels in the most critical areas of the arrival segments. (especially as Emirates needs to be at A100 at 120 DME
)
Add to this adjacent sectors that we have no dialogue with that feed 3/4's of your traffic, antiquated equipment, disgusting traffic management procedures (i.e none) and no television in the rest room!!!!
A typical daily scenario I might add.