Hi Mr Michael
Improvements in engines might make those shorter flights viable in the future. All I was saying was at present there seem to be a lot of routes not suitable for a380 service because on the very popular routes the business passengers per fare smaller flights more often. Then most of the smaller routes are two small. It works for emirates as they operate a mega hub model however not to many can operate on that scale. I do however believe in time air china will use them.