The Quarq DFour power meter's accuracy during high-intensity sprints is indeed puzzling. While Quarq claims a 1.5% margin of error, real-world variations due to muscle recruitment and bike handling can't be ignored. It's crucial to know if our power data is skewed by these factors or if there's something else at play. I've noticed inconsistencies too - have you experienced similar issues? Let's dig deeper into this #powerMeterPuzzle.