It was a perfect performance by Man City, they made it look effortless. Despite taking an early lead they didn't back to the defence but dominated in possession (65%) and only allowed Fulham to only make one shot on goal throughout the entire game.
They have a potentially tough away game against Tottenham on Tue, but if they play like this, they have nothing to worry about. Plus, Tottenham tends to perform poorly against higher-ranked teams.
As for the Arsenal, I don't think it's going to be an easy game for them tomorrow. Man United might be having a horrible season and are nothing but a disappointment to their fans, but they can still be dangerous. I wouldn't be surprised if they steal some points from Arsenal. Maybe if they win and help the City reach for the trophy, maybe the City will reciprocate and let them win the FA Cup final round.