I think the conclusion is:
- That the principles of navigation are the same.
- When walking you can forget the map for longish periods as it's going to take some time to get to the next handrail/collection point. When running it pays to hold the map with the thumb at your approximate location and keep the map oriented to the ground.
- Navigation to a point and knowing which is the quickest way to a point (ie route choice) are not exactly the same thing. You can be very good at the first, but hopeless at the latter!