A quarterback's situation is more important to his success or failure than any other position.
Would Tom Brady have become the GOAT if the New England Patriots didn't select him with the 199th overall pick in the 2000 NFL draft? They almost didn't.
Would Eli Manning have won two championships if the then-San Diego Chargers didn't trade him? Former Giants general manager Ernie Accorsi didn't even think a deal would come together.
Would JaMarcus Russell have failed no matter where he landed? Probably, but no one can be certain.