I have a dual sided PM and just looked at my last 30 rides. It appears inside on my Kickr Core (using Powermatch) I tend to favor my right side 49/51 on average. However outside I favor my left 51/49 on average. There are some outliers, usually on trails where I have greatly favored my left, I believe when I get really tired. Most notably an MTB where I was 55/45.
What does it all mean🤷🏽♂️.
I did some previous analysis of my new PM and my Kickr Snap found here:
where I was 55/45.