Accuracy of Schwinn A.C. Echelon spin bike

Hey just looking for advice I’ve been training for an Ironman with the Schwinn spin bike at the gym and it seems like the power numbers read about 10-20 watts high. Just wondering if anyone has more hard data on the power accuracy of these bikes compared to real “accurate” pms. I put some of my workout numbers etc on IG at @kclarkzeroto300fitness thanks in advance for any help/advice!!-KEVIN

These use either a Stages power meter (brick on left side crank arm) or a flywheel rpm sensor (like a lot of highend trainers do). The stages units are wildly inaccurate in my experience bike to bike, but consistent-ish. The rpm sensor as-implemented is probably wrong but consistent.