>>1109681Strava estimated power tends to be quite accurate on road climbs. Its absolute shit anywhere else. But since this is a road climb, there must be something wrong with your settings.
Did you select the same bike? For example, if you select a mountainbike, youll get a much higher estimated power than if you were to select a road bike.
Another thing that could cause this: did you get a new bike computer that has a barometer? Without barometric data, Strava will create the altitude profile with GPS data, which tends to be very jaggy and tends to result in a doubling of your actual altitude gain. This also results in a much higher estimated power.