our regulations are far from clear, as to the authority of the PIC is concerned, compared to FAR 91.3.
Yes they are. The table of airspace services and requirements in AIP is quite clear. The PIC has no authority, except as granted by the CARs, to bust any speed limit in that table.
All that USA "authority" is just extra rules that the yanks have decided to impose. I wonder if they have lodged differences with ICAO?
