Wow, this thread is still going, eh?
It's like this. Society has deemed it inappropriate to mock people's religion. It causes huge bad feelings, if you do. In practical terms, think of it like insulting your mum.
Sure, some people here hate their mothers. Some of your mothers are probably crack addict hos. You insult her all the time, so it's no biggie if others do. But most people would be upset if Apple approved an app called "iHumpedYerMom", allowing for the user to superimpose a photo of your mother tied by her wrists on a bed (as an example).
Why? Because you don't go there. Mothers are inviolate. So is religion. End. Of.
Again, the point here is that Apple should not be blocking apps because they are concerned it might offend people. TV stations air content that many would consider offensive (including shows that mock religion), and people are free to watch it or not.