#3 Lucas Torreira's physicality
Lucas Torreira's presence was a factor here also, considering Fulham's game plan was to be physical and press Arsenal high up the pitch. This didn't really work, and Arsenal's greater technical capacity told for the win.
Torreira was fouled extensively in the game, and in a way, this was due to Fulham's game plan, and because he could handle it and manage it well.
He is the player Arsenal have needed for several years, in terms of a strong midfielder who not only can tackle but pass and provide greater positional stability.
Edited by Raunak J