The more expensive, wider - body aircraft such as the 777 and 747 saw fewer deliveries. (fortune.com)
Business / economy is a seating class that has been most widely adopted on narrow body aircraft in Western Europe. (news.ihsmarkit.com)
The smaller cabin feels extremely private and to the best of my knowledge, it's the only Business Class cabin in a wide body aircraft with only one row of seats (correct me if I am wrong please). (theluxurytravelexpert.com)