Originally Posted by
prathmann
Another cause for what you saw would be inaccuracies in the power meter. It has sensors to measure your pressure on the crank and therefore the effective torque and also determines your cadence in order to estimate your power input to the bike. If those sensors aren't perfectly linear then you'd get a different reading in a lower gear with decreased torque but higher cadence even if the actual power didn't change.
The white horse was 1/8 inch shorter than the black one. OP is using a Stages.