Anyone suspecting their Enduro is reporting higher Elev Gains than it should?

I've had my Fenix 3 HR since 2016 and through the years of competing in ultra trail races abroad, the F3HR had always been accurate when it comes to distance and total elev gains but perhaps slightly lower than the organiser's published numbers. Then when I got the Enduro I immediately started getting uncomfortable with the more generous elevation gains. It's running the latest software version for APAC model. Photo below from today's trail run, there's a 137m difference in elev gains between the two. What are your thoughts?