I loathe man utd, so am pleased they lost, but it's extra sweet that the first leg was advertised with a quote from David Moyes along the lines of "We're man utd, we win trophies, it's what we do". Ha!
Man City aren't as strong away from home, and Sunderland have already beaten them. Man City have already beaten Man Utd 4-1 (at home). On results so far this season, Man City v Man Utd would be more of a walkover.
Though I'd say either way, Man City would be strong favourites, but if...