IMHO, statistics, like these, are useless when there is little or no balancing with respect to server population, player ability, map voting, server crash. It is like that stat that says most car accidents happen within 10KM of home. Seeing that your car spends most of its time within 10KM of home, where else are you "most likely" to have a crash?
I think the ADMINS do a great job picking the right map for the circumstances at the time.
Interesting read thou, oh, note these numbers are over a three month period.