It's really the Patriots offensive system. The play design is awesome. Yes a QB needs to know the system and have talent, and yes you need the right personnel but much like the Steelers defense it is more about the system and being able to plug in the right personnel than it is about individual greatness. Case in point look at Welker, Amendola, Edelman and now Hogan. These aren't world beaters and wouldn't work in systems run by teams like the Saints, and Giants offense.