True. But on the page that opens up with the link you provided (Profile page), it clearly breaks out Geocaches Found and Challenges Completed. Also, under the Statistics tab, the number listed is the number of geocaches found, not the total of geocaches and challenges. It would appear that there are not any statistics being generated by the website on challenges.
Originally Posted by Ashallond
"Wildness is a necessity." -- John Muir
"When you go to hide a geocache, think of the reason you are bringing people to that spot. If the only reason is for the geocache, then find a better spot." – briansnat