Revit has the structure-based, architecture specific advantages over AutoCAD that a construction professional, architect or builder may be interested in. From Building Information Management (BIM) integration to pre-demolition planning features and functionality, Revit is for the architect/builder what AutoCAD is for the professional or hardcore-hobbyist engineering designer.
AutoCAD is an all-in-all suite. It caters to a big user base, an even bigger market and even complex set of domains. Its limitations are its learning curve and complex interface, along with the cumbersome feature set. One scope that was not so clearly defined or highlighted