Archicad birth was in 1984 that means 2 years after Autodesk Autocad. In 90ies it was the ODA
birth. It aim was to make the Autocad DWG open. Archicad was already a teenager.
In 90ies too, AIA (BuildingSmart today) was created to make a BIM open format. The IFC
In 2002 so 18 years after Archicad it was Revit birth (that Autodesk buy). Because of this delay, yo you are able to understand that Revit get other aim about collaboration with the other softwares. Today the only way to switch project from a software to another is IFC file but you have to think that IFC 2x3 are not made to be modified. (Revit is always not certified ifc4
Archicad is a great and easy software to export and import IFC file but we can not tell the same about Revit.
Finaly you are able to import rfa like GDL object and rvt into your Archicad like a module but that do not mean you can modify them.
Christophe - FRANCE
Archicad Designer and Teacher
Archicad 15 to 23 FRA FULL
"Quality is never an accident; it's always the result of an intelligent effort " - John Ruskin