I just started using MB this afternoon after not having used it for about a year. I was astounded to see the Training Center value of 1,097 feet of climbing turned into 1,912 feet of climbing in MotionBased for my ride on Saturday. That's going from 28 ft of climbing per mile to 49 ft of climbing per mile. That's absurd! Presumably, Garmin has something to do with the formula used to calculate ascent on MB as well as TC.