A couple of british newspapers did comics remarking on that after the whole uproar. They did one where mohammed is in heaven with Jesus, God, and someone else, i forget who, and they say, welcome to the club.
If a movie came out, saying mohammed was just some guy who was a trickster, a manipulator, who didn't actually communicate with heaven, and was just spewing bile out for money and fame, you don't think the muslims would be upset? The comic contreversy would look like nothing in compare.