Like last season when you beat AC Milan? Oh wait... Barca are a much better footballing side, but were in turmoil and posed no real attacking threat - they got beaten 4-1 by Real Madrid so clearly they're not up to much overall either. the FA cup result meant nothing as the players weren't interested as every pundit said was obvious and even fergie said Arsenal were unlucky in the league.
And I didn't say United have played badly all season, but they only picked up more points by grinding out results when playing badly and have lost 66.6% more games than Arsenal or Chelsea - explain that one if you're so great!