I said "cabin is a bit wider" not the plane itself. I was under the impression that with neo they made the isolation on the walls of the cabin a bit thinner (2 inches?) gaining more room in the cabin while keeping the outside shape the same but I can't find anything about it anymore

EDIT: oh yeah found it: https://tqpr.com/airbus-new-single-aisle-airspace-cabin-ente...

> The new Airspace features include: slimmer sidewall panels for extra personal space at shoulder level

or https://www.ainonline.com/aviation-news/air-transport/2017-0...

> The Airspace package includes new sidewalls that provide one additional inch of shoulder-height cabin width