disagree with a lot of that. arsenal are not weak in comparison to united, with the exception of strikers arsenal have better players in every department this year, especially midfield. at this rate everton, spurs and Liverpool are as much of a threat to the title challenge as united are.
I cant see pellegrini getting sacked. they need to sort their away form granted, but that hardly justifies a mid-season sacking. as for Chelsea getting the decisions, I can think of one notable one this season (against west brom), sure theres been more.
the next three games are huge for arsenal - everton (which is on as I type), man city away and Chelsea. if they take 6 or more points from that, they are easily favourites for the title