A lot of people have just decided to suddenly conveniently ignore the fact that this team was actually rather shit for pretty much all of last season, and most of the season before that. Bailed out almost invariably by Carrick and Van Persie, both of who have spent a majority of this season either injuired or playing despite being nowhere near their best.
That makes a big difference, and the only other difference I can see is that the belief of the players has gone. None of them seem to want the ball, and none have the confidence to do the right thing when they have it.
You can put that down to Moyes as it's his job to address it, but Ferguson has in reality left him a mess of a squad, tainted by average quality, non-winning mentality and spoilt by success. There are so many players there who it seems liked to hide their frailties behind Fergie, and now want to carry on hiding.
You're basically asking Moyes to be as good as Fergie at everything Fergie is good at, and then want to sack him off when it turns out he isn't. Ferguson might be the best manager there's ever been, but when you take his strengths away from this squad, what's becoming apparent is that it's not actually nearly as good as he claimed it was.
Who do you replace Moyes with that suddenly makes this issue go away? I know Mourinho was the big favourite on here and people were spitting their dummies when he went to Chelsea, but he's gone to Chelsea, brought in some average players and generally made them worse. He'd be faced with the same issues here as Moyes has had.
I think what's happened is a dose of reality, though what Moyes does need to do is get the players grafting like hell and forcing themselves to want the ball until they get a few results and the belief starts to come back. At the moment it's like they're all waiting for someone else to do it for them. It's clear they're not going to do what Fergie seemed to think they would in terms of being big enough characters to do it themselves.
To be honest the likes of Rio seemed to take Fergie's "don't let the new manager down" speech as some kind of reverse psychology challenge. They'll be the same whoever the manager is so I don't see the point in yielding the axe before the manager has even had a chance to yield his own.