The A380 is probably quieter than its competitors. And further, if there are less flights with A380s carrying 400 passengers, then there will be more flights wi

The A380 is probably quieter than its competitors. And further, if there are less flights with A380s carrying 400 passengers, then there will be more flights with alternative planes carrying 200 passengers. Those 400 passengers are still going to fly. Fewer A380s mean there will likely be more planes flying overhead, and each one is likely noisier than the A380.