Open this https://connect.garmin.com/modern/activity/827973704
Then look at the elevation and the pace. Can you see where I did 3:45/km is about 1mm to the average 4:45 it is zoomed al the way up to 15min/km where everything above 7min/km is useless information.
Likewise the Elevation bar does not depict "difference in elevation very good. the zoom shows 0- 200m above ground but the highest I am is 64-86m
the amount of useless information depicted on that scale is about 95%