Originally Posted by
Lookatthesky
To try and compare the UK ATC system to yours (I guess USA??) is slightly bizarre given the amount of airspace you get to play with
Looking at the airspace designs the big US terminal airspaces seem to have significantly more movements/ km3 of Class D or above sky (some pretty small 'TMAs' compared to London) than the UK. But it is a different system, technology, set of rules so would agree comparison is tough.