Can Zwifts performance data export be relied upon as a definitive measure of a riders true fitness level, or is it merely a useful tool for tracking progress and identifying areas for improvement? Some argue that the data provides an accurate representation of a riders power output, cadence, and other key metrics, while others claim that it is susceptible to manipulation and inconsistencies. For example, how can we account for variations in rider weight, bike setup, and environmental conditions when comparing data across different rides and riders? Furthermore, what role do factors like fatigue, motivation, and bike fit play in influencing performance data, and how can we adjust for these variables when analyzing export data? Should we prioritize absolute power numbers or focus on relative improvements over time? And what about the limitations of Zwifts algorithms and data processing - can we trust the accuracy of the data or are there potential biases and errors that need to be considered? What are your thoughts on the reliability and usefulness of Zwifts performance data export, and how do you use it to inform your training and racing decisions?