Well if your chinese brothers were pushing as much tin as the JFK guys, they would have to speak faster too. I bet JFK ATC handles more movements in an hour than those beijing controllers do all day.
That's a very good excuse, however, I'm sure a professional ground controller does know how to handle the rush hours. If a ground controller can get so mad or rude so easily, I'd call him/her unprofessional.
Not saying the US way is perfect, but when I fly into that north-east corridor and hear that ole Brooklyn slang firing over the radio...i feel all warm and cozy.....and more importantly: SAFE!!!
Yes slang...that's the problem...NOT everyone understands slang!
Not being a smartass here, but that's what in my head.