Everyone thinks Arsenal will slip in every game now. Manchester United still has to travel to the Bridge, where Chelsea hasn't lost in 3 years. And also you must welcome Liverpool as well as Arsenal to Old Trafford. And you think United can't slip up. It's up in the air, and as I've been saying, predictions are worthless. Teams like Villa, West Ham, Tottenham, and Everton can bite you in the ass.
Arsenal has a real shot at multiple trophies this year, as does United. That's what is keeping it even closer.