Related to another thread concerning riding via RPE-- yeah, it doesn't work. Of these two rides, the one on the right felt significantly easier.
But it was basically the same effort, separated by just 69 seconds. I honestly don't see where the differential in relative effort is coming from.
I guess it could be that I did a more steady, measured output on the higher relative effort, while on the other I reserved on the flats and
hammered on the punchy climbs.