The pats use a lot of picks on olineman. Mankins and Solder are 1s, Volmer is a 2nd. The TE has to be able to inline block. Then, Brady stays in the pocket
the olineman don't have to worry that he is rolling out they have 3yd by 3yd area to keep clean. Brady is very good at pre snap reads and audibles out.
The WRs run hot routes and have good blitz recognition.
Like almost everything else in football each groups effectiveness is contingent upon the others groups doing their jobs. On the pats it works with the oline and it does not work with the DBs