H3 Watts accuracy in Zwift

Forgive me if this is not the right place to post this question but I just set up my Saris H3, calibrated in Rouvy and did a ride in Zwift. My average power was 80-100 Watts more than when I was using my Cycleops Fluid 2 and Zwift’s computed output from the Fluid 2 power curve. I rode 21 mile in 1 hour. This seems way too high to me.

Is there a way to investigate the accuracy of the reported power in Zwift (without buying another power device like Garmin pedals)?

Please tell me if I should post this somewhere else.

Thank you!

I would trust the H3 long before I’d trust a calculated guess at the Fluid2’s resistance. I have a Fluid2 and well know how the Fluid2 changes resistance as the unit warms up.

What I can say is that my H2’s numbers match well with my PowerTap G3 on the road.

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