The stats are very limited in what they tell you and can be very misleading. You cannot tell a fetcher's contribution solely by the number of turnovers, just like I suppose you can't tell a winger's contribution by the number of tries he scores. For what it's worth, ESPN stats regularly show those in the backline leading in the turnover count, and no one considers 12s or 13s to be out-and-out fetchers. Fetchers do more than win turnovers (which doesn't happen all that often anyway) - they slow opposition play down and generally make a nuisance of the possession that the opposite team has, and stats don't evaulate this. Robshaw does get involved with rucks, but every 6 should anyway. Every decent 6 is a 6.5.