Eric Mangini is a genius. The Bills, Jets, and Dolphins are already nipping at the Patriots' heels. Romeo Crennel is in serious danger of losing his coaching job. The San Diego Chargers are so talented that the loss of Marty Schottenheimer has been a mere speed bump. Peyton Manning is the best quarterback who ever played the game; his play has nothing to do with his receivers. Tom Brady is just a system quarterback who can't throw a deep ball. Wes Welker isn't worth a second-round draft pick. What else have we learned?