I haven't read through this thread to be honest so apologies if this has been mentioned already. A point I've considered that gives me great optimism for today is Everton - and Moyes' - record against Swansea at the Liberty Stadium. In their two meetings since Swansea were promoted, Everton have won both games without conceding (0-2 in 11/12 and 0-3 in 12/13). Now people will dismiss this and say that Everton's personnel are different to United's, and they'd be right, but I'm of the thinking that Moyes knows how to approach Swansea and can devise a game-winning plan for them.
Yes, Swansea are ahead of us this season so far in terms of competitive football, but I expect out fitness gains over the past three weeks especially to be more than enough to cope with that. Bony looks a threat, as will Michu, but I think we have enough to contain them as well as punishing them down the other end. Welbeck and van Persie are in great form and I expect those two, along with Kagawa, to be the difference today.