It feels to me like this discussion might be going down the wrong path when trying to compare the different power meters. My take is that boils down to using one power meter consistently for your training, and since you are training indoors, just use the trainer power. Don’t worry about how that compares to your other power meters, especially across different bikes. They will never match and there are many reasons why they won’t. All you should really care about is your “relative” power increase/decrease as you train, assuming you are using the same trainer power consistently, and it has decent accuracy. Trying to compare power across trainers, bikes, pedals, etc. is just taking you down a deep rathole…
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