Based on McCartney's formula for success, it isn't about having the best talent spotter. It is about developing a team first ethos and recruiting quality people who will adhere to that ethos. Then out of that culture, champion players will emerge. It raises a chicken and egg scenario. Did the recruiter make the team, or did the team make the recruiter?
I am actually a disciple of Macca's philosophy. I am not demeaning the work of Stephen Wells, but I believe that the more important ingredient was the culture of the club.
Of course the father/son selections didn't hurt either.