One tug works for a runway because most airports in China have only about 10 gates and Chinese ATC requires very wide spacing between departures. Also, go to PEK, PVG, CAN and some of the bigger airports and you will see far more pushback tugs than one per runway, and far more ground crew as well.[/QUOTE]

Trust me, got to ORD, LGA, or Heathrow. Beijing looks like the first world airport.