Good point, John! Thanks for that reference.
That is talking about roll control up to the point of stall. I haven't seen a requirement for positive roll control after the point of stall. My reference to the C172 included flight after the point of stall. I tried many times and could not get the airplane to roll opposite the aileron input.
Due to the very forward CG limit and the Cessna wings being built to be quite stable, I'm not surprised. In a Cirrus with a CG towards the aft limit, I would not be surprised if you could get the airplane to roll opposite the aileron input after the stall.