I cant really say anything as to the accuracy of the power on strava as i dont have anything to compare it to. Other then I'm sure I'm not putting of 1600 watts on sprints sometimes like it says. I did notice a huge discrepancy with it elevation gain. On my profile it shows my biggest climb as a being 286 ft. I know i haven't climbed a hill that size because i know where it picked that up at by clicking on the number on my profile. I review that segment and its only a 12 ft gain in elevation on that entire road.