This old chestnut again
N.American ATCC is the best in the world.Euro ATC also damn good.Just different.One or two yank TCA's could be a little more patient and speak slower for the Chinese,thats true enough.Theres always room for improvement.But some of these pilots from far-flung places(china,Korea,latin america) dont even have level IV.Is it the pot calling the kettle black?