I’m under the impression that all of the plans are the same whether they are pace based, hr based or power based. They simply show the appropriate metric for what plan type they are. In other words a running pace plan is identical to a running power plan except you are guided by pace rather than power. Is this correct?
B, That is exactly correct. The duration and intensity of every workouts is exactly the same, the only difference is how the intensity targets are delivered to your device by default: Speed, bpm, or watts.
Remember, even if you have the HR plan, for example, you can train by Pace or Power at any time. If the workouts calls for “Zone 2” and your device says “141-159bpm” you can ignore the device and cruise at your Zone 2 Pace of 8:25-9:50 per mile.
The intensity type is just a convenience, not a requirement.