Fair point, but that's not what Ed means, Gnegy-pooh (you've replaced Snyde, by the way, with the addition of "pooh" to your name).
He's only talking from the angle of looking at the fixture and predicting the result. If you were to look at Burnley - Man Utd before hand, you'd have a Man Utd win written all over that and the same goes for Wigan - Chelsea (Or atleast a result far from the eventual 3-1).
If you watched a game between Accrington Stanley and Barcelona and saw that Accrington were by far the better side and came out of it as worthy winners, of course you wouldn't be surprised by the result bar the fact that Accrington Stanley have just beaten a team far bigger than themselves...