Moyes says there have been occasions this season when he did not feel the condemnation was fair.
"If people judge me at Manchester United on how we do I can't argue," he said.
"If criticism is for the team not playing well, like we did at Manchester City, it is totally deserved.
"But in some cases we have done okay this year and people have chosen to do that. They tell me that is a trait at Manchester United."
'They' in this case may well be Sir Alex Ferguson, who had a less than positive view of the people paid to pass judgement on United's performances.
On some occasion though, there can be no dispute. And Sunday was one of them.
"It didn't feel good after we lost to Manchester City," said Moyes.
"You wouldn't expect me to feel good and I don't think anyone would want me to feel good either after the way we played.
"There was a level from Manchester City that I hadn't seen. I don't think many people had.
"That is no reason. On the day we had too many players who had a complete off day. Because of that it gave us no chance of winning."
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