It’s not uncommon for Euro-spec vehicles to run different engines than their USA-spec variants. You’ll also often find all sorts of oddball things changed based on where it was sold, from interior trim to full systems. Sometimes the available equipment is different for the US, European, Canadian, and Japanese markets.
A guy in my old car club was trying to put the best of everything in his 90’s Honda. He had to source from Canada for the seat heaters and leather interior, Japan for the glass roof and engine/transmission, and Europe for the power windows and some other bits.
So, yeah, there are probably differences beyond just where the driver sits between your VW and a USDM VW, and that would be reflected in the manuals.