I believe it was clearly said at different occasions “PC won’t be dumbed down because of Xbox” and/or “Xbox will be the same experience as the PC”, or something along these lines like:
(although here the official word is “content”)
Furthermore the entire paradigm is code once play anywhere and this is what MSFT is pushing forward.
If this is written somewhere, you’ll certainly find it faster than me, but everything is telling the code is supposed to be the same amongst the 2 versions. Obviously I might be entirely wrong too.
[EDIT: found some info]
SDK Q&A April 21st Overview - Community / News and Announcements - Microsoft Flight Simulator Forums
Q: Will update run on Xbox and PC at the same or will they be running independently?
Eric – It’s the same code base but we can’t tell if they are going to be deployed simultaneously (It’s not
really an SDK question)