When I post my results from my Garmin on the Strava website it shows very different numbers for the calorie counts. Mileage, average speed, elevations, etc. are all nearly identical, but the calorie counts on Strava are about 40% lower.

Any idea which is more accurate or why the differences? Can I adjust settings somewhere to get the numbers to match?

I know that both numbers are really formula based, but as I used them for comparison purposes, it would be nice if they were consistent.

Thanks.