A couple of weeks ago, flag carrier Air Canada announced it planned to open new point-to-point routes to secondary European cities using the Airbus A321LR, a long-range version of the narrow-body twin jet normally deployed on short-haul routes worldwide. The airline boasted its ability to enter new markets because of the efficiency benefits offered by these new-technology aircraft.  In Ireland, Aer Lingus is already using the same equipment to open up destinations in North America that could never be serviced using the large Airbus A330 twin-aisle aircraft that have ploughed the north Atlantic for the Irish carrier over the last…