so i have a theory on pedal power vs chainring or hub - the sum of your pedal power is different, because if you don't lift
the raising leg, you get the power at the pedal, but not at the chainring or hub - it is consumed by the power needed to raise the off leg up.
i've been playing with pedal mechanics on the kickr and it looks to be 20-30 watts by just releasing the leg weight, not scraping or pulling up.
i'm a noob at this, so i would think some of the power people,
@UtahJoe could comment - probably should start a thread. like a blog or something....(not a hint)