A key NFL adage is a simple one: You are never as good or as bad as you looked in Week 1. So despite all the immediate overreactions -- the Twitter cult makes most of them -- take a big, deep breath and remember that it's just one game.The Jacksonville Jaguars, fresh off their upset victory over the Indianapolis Colts, are not better than the San Francisco 49ers, who lost at home to the Arizona Cardinals. The Cleveland Browns aren't as bad as they looked against the Baltimore Ravens Sunday, while the Washington Football Team, despite an impressive victory over the Philadelphia Eagles, aren't ready to compete for a division title.It's just one week. Say it over and over again.But all the madness of Week 1 sure makes it a tough challenge to put together my Week 2 Power Rankings.- Pete Prisco