McDermott was keen to praise the work of their driving force.
"David Moyes is a great manager and he has done it at this level for a long, long time and proven to be one of the great managers," he said.
"I have done two or three years as manager and my record, up to the last 10 games, has been okay.
"But David Moyes is a great manager because he has stood the test of time - I think longevity is really, really important and that is what you try to get as a manager because it is good for the club.
"You tend to find the most successful clubs are the ones where the manager has been around for a while.
"I'm not surprised (by his success). You look at the manager and the staff he has got round him, and the players he has got, and what he has got is a real spirit there and a really good group.
"I was just looking at his squad - what he has there is quality.
"In comparison to what people spend at that end of the table he has done a fantastic job.
"He is a great manager and I really like him, I like spending time in his company."