- You entered the lovely and sad world of having more than one power measuring device. As great as having them match and be within manufacturer tolerances, your experience is all too common. There are numerous threads here with people that have mismatched devices.
- Some power meters allow adjustment (scaling of value in the case of the Favero Assioma), but I don’t think you have that option with either of your devices directly.
- One hack, mentioned just today in another thread, is to adjust your crank length setting in your power meter to fudge your numbers closer to your trainer (which I don’t think offers any means of adjustment, even hacks like the length fake above).
That is essentially impossible without at least a 3rd power measuring device to compare between your current two.