have a look at the photo with this (ignore the story itself)
http://www.thisislond...an-from-the-pulpit.do
The children's faces have been pixillated out. Why? Because people are nervous about the power of depicting them in public. It's thought that showing them puts them at some sort of risk, by giving others the power to identify them
At the moment we only do this with children. But as concern over privacy/intrusion increases adults are worried about this too. Some publications require releases from everyone in a photo before they'll print it.
This is a roundabout way of answering your question, I know. But people are concerned over the uses of imagery, a concern that seems to be slowly increasing; and it makes sense to be more concerned for those closer to you - which in the case of Muslims would be Mohammed rather than Jesus. But many dislike portraits of any living being.
As you probably know, Christianity has also had a history of iconoclasm; and Muslims have in the past portayed living beings.
http://upload.wikimed...d/d2/Samarkand-25.JPG
It's pointless to demand "consistency" from "Muslims"; like anyone else, they have differing views among themselves.