It may be a myth. However, no matter if it's a mile high or a sea level, home field advantage is not a myth. Having said that, I'm very confident today that we will win.
The difference in oxygen levels between 5190 and 5280 feet is quite significant. The Pats got nothing to worry about. All these stories about the air being thin and it being hard for the players to breath? Nuttin but a myth!