Originally Posted by blatantninja 
The difference is that while Christianity has the New Testament, which basically says not to follow anything in the Old Testament and is focused much more on the 'love thy neighbor' message
That's a very recent interpretion. Go back 300 years in Europe and quoting John 15:6 was fine if you wanted to burn people alive and Paulus ideas on women weren't particularly nice, not to mention the NT is the root of antijudaism in the west.
Adaptable interpretions is very much enforced when a movement lacks power and reformed muslims are as selective as modern Christians in what passages they claim superseeds another. "To be a muslim means to be a good person" was a summary I got from a muslim friend who had one of the most radical contempts against maladaptive muslims that I ever met.