Their goal difference is only 2 less than United's....and that's with trying to accommodate an incompetent Torres since January!
You have to take into account how inconsistent the whole league has been this season, including United with their away form - but still they pull out the results when it mattered. You were needing 80+ points to win the league, this year its going to be less.
It was really arsenals to win and they fluffed it