Ferguson was responding to comments made by Patrick Vieira, that United were fortunate to get decisions their way.
“From the referee’s position, I can see why he didn’t give a penalty when Danny Murphy was brought down,” he said. “The ball moved to the angle as Michael Carrick challenged him. From that position, it wasn’t clear.
“It was a good claim but City could have had a penalty against them at Stoke for a foul by Gareth Barry. Every club gets breaks here and there, you get good ones and bad ones. It evens itself out over the season, that will never change.”