While I find this measurement of limitation good, when trying to go out and hit a specific target and stimulate specific adaptations, sometimes it is important to ignore it, just finish the session anyway, and not let the numbers control you.

When I first started training with power, the constant desire to always hit high numbers began to limit me and nowadays I simply do my planned workout, THEN look at the numbers and use them to calibrate my understanding of how I fatigue.

Have you joined the Google wattage group? Lots of knowledge and experts on there to answer all your questions.