Miller is not the only one to call Brady the G.O.A.T.  Most QBs, including Hall of Fame QBs have said the same thing as well, including: Jim Kelly, Troy Aikman, Joe Theisman, Kurt Warner, Boomer Esiason, Steve Young, Donovan McNabb, Ron Jaworski, Fran Tarkenton and Warren Moon to name a few.  Aaron Rodgers and Ben Roethlisberger too.  

Looks like its a consensus.