There are VERY few so called "moderate" Muslims out there...
(1) Muslims ALWAYS claim that the Quran has no contradiction, and the Quran has never been "corrupted" and blah blah...If these beliefs are true, how can there possibly be religious distinction between Extreme vs Moderate Muslims...?
If the Quran has no room for human interpretation i.e. MODERATION, then logically, the extreme version of Islam is probably Islam as it should be practised...
(2) Socially, some Muslims maybe "moderate"...For example, a "moderate" Muslim may leave a homosexual alone because that Muslim is living in Canada, and doing as Canadians, but deep inside himself, that Muslim still believes in the Quran's punishment for gay people...
(3) That's my opinion about so called "moderate" Muslims...They tolerate non-Muslims socially, but religiously, many of them, don't have any tolerance for non-Muslims...
(4) Christianity is different because Paul pretty much states that there is no physical ritual any one can do to go to heaven...You go to heaven because of "grace"...And no one really knows what "grace" even means, and hence, you have a million and one Christian denominations, because Paul's writings are subject to 7 Billion different interpretations...
That's why it's easier to have "moderate" Christians than "moderate" Muslims...Islam is similar to the old testament...You have to perform certain rituals to be a good Muslim, and because the Quran was supposedly given to and written by one messenger, there is VERY little room for personal interpretations...
In other words, there is little room for "moderation"...
If you follow the rituals the Quran states you should follow, you are a Muslim, if you don't, you are an Infidel...That's how ISIS and the Taliban see it...They maybe extreme, but I don't believe they are wrong about Islam...