Divide climbing challenges into two categories, true barometric devices and corrected devices.
Strava's ascent computation for iPhone and Android devices typically gives too large a number - sometimes double the true ascent. All results from those devices and any other ascent derived by correction should be put into a separate category for climbing challenges. There should be a category reserved for ascents derived from uncorrected barometric devices.
I have attached data pulled from Strava for all activities that cover a route - Cyprus Cycling Challenge Day 3. There is an obvious trend that needs no explanation.
See the rules for the true Everesting event.
edit - tinyurl for this post http://tinyurl.com/pc9cbhg
Results from CCC Day 3.pdf