I did both Zwift and TR ramp test in a very close days. Zwift gave me 246 which I don’t think is accurate because I knew that I can’t sustain 246 for an hour. In contrast, TR gave me 231 which I believe that is more closer to my fitness is. I felt that Zwift is using fixed 20 watt a step which brought you up to the higher intensity faster so you can actually sustain higher power because you were not exhausted for too long. In the other hand, TR is based on 6% of your FTP that in generally is a better approach.
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