This could have been a great serious film, instead it is a decent film with unnecessary humor. I suppose Guy Ritchie just feels compelled to go over the top a bit with almost everything that he does. There was one film he did called "The Covenant" that takes place in Afghanistan that departed from his usual style of directing. It deviated so much in fact that you wouldn't even know he was the director of it unless you were told so.
It lost at least $20 million so I guess that is why he never returned to that style.