Originally Posted by
euphoria
I know it's just Bicycling but we can assume in good faith they did proper LT and MAP testing.
You assume a lot. The Bicycling article is a summary of a single research paper focusing on a very specific and limited application of a power meter or heart rate monitor. There is some dispute about the validity of the results; but ignoring that, the most that can be said is there was no difference in performance when the power meter and HRM were applied in that one specific way. The paper never explored the question of whether that was the appropriate manner to employ those tools.