OMG We haven't done this on this new board yet!!! Can we have the Brady Vs Manning argument?
Brady has Belichick, great coach and great system hence Brady is a system QB! etc etc etc
Manning was amazing but he sucked in the playoffs. etc etc etc
We had some legendary discussions about who was better.
To answer the question though: Belichick is a master of his team. That's my strong opinion on why these anyone QBs step in and play well. Belichick has been amazing at capitalizing on his team's strengths and minimizing their flaws. If you really want to know if Brady is just a system QB I'd suggest doing a comparison of the numbers when Brady's on the field vs when he's not. Another fact is Brady has set some pretty significant records, 50 TDs used to be a record, topped 5k yards in a season, bajillion throws the other year without an INT... Until one of these noobs has 2 seasons under their belt I aint buying that these plug and play QBs are as good as Brady. DCs have 15 years of film on Brady to know what he can and can't do well. These plug and play QBs have virtually no game film so DCs are stuck playing relatively vanilla at them without knowing their specific faults. I stated I'd want 2 years of playing time to really make a comparison between Brady and any of these other Pats QBs. That gives a year of film for the DCs to figure out how to game plan against the QB and a year for the QB to play against tailored game plans to start comparing them to Brady.