City still came out on top, but Moyes felt he learned something from the experience.
He explained: "We played Man City and we decided to man mark David Silva and I remember getting a lot of criticism after the game, with people saying I was being negative.
"But I'd watched them the week before score four and I think it was five the week before that against Tottenham and I felt Silva at the time was by the far the main player.
"I don't think I've ever done that once in my managerial career.
"But at the time I thought the way David Silva was we had to do it and we did a really good job on him for 70 minutes and it took a deflected goal and we eventually lose 2-0 but that's what you have to do as a manager.
"We came very close on that day but we got criticised for not playing two strikers, but you can see what they are doing to some of the good teams."