I've heard people say the same about Islam!!
Difference is that Islam's founder didn't say to love your neighbor as yourself. I think he said off with their heads or something to that effect.
A Christian is one indwelt by God's spirit because they've been born anew BY that Spirit. A Christian doesn't commit atroticites. However, as I said, many who think they're Christians or claim to be do.
It seems to me that the 'hard sayings' in the Bible are from historical narratives where God says such-and-such and the hearer (the people of Israel, etc.) then performs some action which would be considered unacceptable today. In the Koran, the 'hard sayings' seem to usually be in the form of general commandments without restriction to a historical context. It's much more difficult to relegate them to history and consider them as not applicable to modern times, though anything is possible.