how come?
I think they are lucky at the moment to be in the position they are, they have one of the weakest sides i can remember them having and i think Arsenal will be consistent until the end of the season and finish 2nd.
IMO, Man Utd will come strong in the 2nd half of the season. Consistency isn't a thing I associate with Arsenal - it will be interesting to see how you do in some tough away games. Also, can you play badly and win? Granted, I've rarely seen United look so shaky.