The issue is your claim that "If not for Manning, that team wouldn't have been very good at all under Dungy." I think you should say that "If not for Manning, the offense wouldn't have been very good under Dungy". THAT is a defensible statement. But the team in terms of win%? Dungy had Trent Dilfer of all people at QB for most of his tenure in Tampa and went to the playoffs 4 out of 6 years. That's pretty impressive if you ask me. IMO Dungy is in the top 20 among NFL coaches. He's not elite like Lombardi, Belichick or Shula or Walsh, but I think a lot of people would list him in the next 10 or so. So I think it's fair to say Dungy could put together a good defense but he needed Manning to make the offense great to win the SB.