Tacx Bushido accuracy

I’ve always thought my bushido reads lower power than I was putting out. For instance Zwift racing one of my friends on a kickr is really close to me while in the real world I’m much faster than him. Then I stumbled across this post http://athletictechreview.com/2017/03/30/tacx-bushido-smart-review-the-calibration/

I’m just wondering if any other bushido users have the same experience?