I would have been surprised and disappointed if the final score was the other way round, that is if Arsenal lost to Chelsea, or a draw.
Arsenal are lucky that they were able to score three goals in the first half to make the comeback possibility for a team struggling so much as Chelsea to be more difficult. Frank Lampard's coaching has only put the supporters of the club into more depression and annoyance with now six losses in all competitions since he took over management fro Graham Potter. Chelsea supporters must have forgotten what it means to be happy and for their club to win games, they cannot continue like this.