Ah that makes sense for the national events etc nixie. In the ideal world everyone would be using the same device and the field would be more fair that way.
I think there’s two ways to look at it.
1) If zwift race fairness and results and are important to you then use the Kickr power reading (although you’ll likely be racing against others with wild one sided power readings etc so I don’t think the field is even or fair in most zwift events anyway).
2) If consistent training figures are important and you train indoor and outdoor then use the pedals.
I used to have a one sided stages that would read about 30w higher than my current pedals. Whilst they would clearly give me an unfair advantage in zwift the fact that I could train indoor and outdoor with one set of numbers was more important to me so I used the stages. Fortunately my Assioma’s and Wattbike are pretty closely matched now so I could use either in zwift but I’ve just got into the habit of swapping the pedals over as it only takes a moment and things are completely consistent that way.
(I used to have a kickr and 3 stages across different bikes and training was a nightmare with so much inconsistency between them. I simply use my Assioma’s on everything now. Its great that I can swap SPD pedal bodies onto them too so I can use them on the MTB as well).
@crossed It’s probably worth doing a comparison between the two and making a decision based on what is more important to you.