This is from a 2+ hour ride. About 60% solo, 40% in group. Rolling terrain. Moderate winds. Mixed roads. I picked this because it seemed to represent a cross-section of my riding habits.

One of the biggest sources of moment-by-moment difference b/w them has to do with response rate -- the iBike responds slower, and actually matches up against the 5-second averaged PT data rather than the raw PT data.



(Moving today, so won't be able to reply to questions for a few days.)