Those are all caused by religious institutions; the pope hates them all. and there's such opposition to these issues because, guess what? They hurt their feelings. And they remain controversial because of bigotry. But there are some very minor controversies out there that aren't caused by Christianity; gun control and the war on drugs, for instance. These issues are caused by sheer ignorance.
How does this relate to the topic in hand? It's hard to say. Games based on real, current wars aren't controversial because of people's bigotry, idiocy, stupidity, or willing or unknowing ignorance.
In fact, I'd go so far as to say that this type of game isn't controversial at all. What it is, however, is stigmatic. People have different views on the war, and because not everyone agrees with it, and even though it's a subject that people can have differing opinions on it without getting upset, it instantly becomes taboo.
So the real problem is that people and organizations have become so incredibly afraid of being politically incorrect, they're not even willing to go along with anything that people won't agree on. Which means that the shelves of the game stores will continue to be filled with endless sequels, because someone might be offended with anything new, and in an overly-sensitive global society, that's enough to get your game banned.
To sum up what I was trying to say, current-war games aren't controversial, but are simply too new of an idea.
I hope my message got across well; I'm actually doped out on sleeping pills right now. I'm not even sure that I wrote about the point I was trying to make.... I'm a very confused man at the moment.
P.S. I think I meant to say earlier that controversies are caused by intolerance. Ex: Fable was controversial for being able to play a gay character.
He has not acquired a fortune; the fortune has acquired him. -- Bion