Well, that's what's called "being smart." They know, that no matter how much effort and time you put into evaluation of draft picks, you are never going to bat 1.000 or maybe not even .500. With that knowledge in hand, it means volume of picks is a necessity since you will have misses no matter how hard you try to avoid them. They have missed on several 1st and 2nd round picks.
http://www.pro-football-reference.co.../nwe/draft.htm
I'd say the hit on Jones, Hightower, Solder, Vereen (they needed him yesterday and he came through as their 3rd string RB.). Ridley (was 1st string back but got hurt), McCourty, Gronk, Spikes, Hernandez, Mayo....Geez, now that I look at it, they do hit on most of their early picks....like really have a high success rate. Meriweather is one of their only flops in the 1st or 2nd round. No wonder these guys are good every year.