Originally Posted by PoorInRichfield

One issue that has kept me from buying a power meter at all is this: How does one know if any power meter is "accurate"? The OP is asking why his Vector 3S pedals aren't reading the same as his Wahoo Kickr (which I also have). Most of us will conclude that one of the power meters is right and the other is wrong. However, what if they're both wrong!??!?! How would you know? Does it really matter if your goal is to simply measure your own performance against yourself over time?
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