"Most people would understand it to mean a country with a civil code largely informed by Islam"
How many of those are there?
And were you just talking about those few countries? Or were your talking about countries with Muslims majorities?
Like the thread title - it's wrong because honor killings happen in many Muslim countries that are not Islamic.
"you were probably wrong in saying the Ottomans weren't moderate!!!!!!! as if I was stupid."
You are probably not stupid, just a bit ignorant. Which is fine. I wouldn't expect you to know anything about the Ottoman Empire.
I can think of quite a few aspects of the Ottoman Empire that were definitely not "moderate" in any modern sense of the word.
"If I saw a thread on fundamentalist Christians murdering doctors who carry out abortions I wouldn't wade in and start saying yes but Muslims carried out the 9-11 attacks."
You might, if on that thread, some idiot said "Christianity is a horrible religion, because Christians murder abortion doctors". You could point out that the same could be said of Islam, because some Muslims have carried out the 9/11 attacks. This would be your way of showing the idiocy of generalising the terrible acts of a fringe minority to an entire religion.
"There's no defence, nothing to be said that can justify it"
Assuming that you are still talking about honor killings, WHO do you think is justifying or defending them? Definitely not me.
"What is this oversensitivity you have?"
What "oversensitivity"? 
I know this stuff, you don't. I'm descended from Ottomans and I have studied the Ottoman Empire for years, you are trying to teach me about them, based on a few minutes of Googling.
Seriously. Get a grip, maybe.