Deadliest religion ever?

[SteveII]

The NT, the New Covenant, cannot be construed to command violence of its adherents in any way--even in cases the OT would have called for a capital offense. So, there should be no difference between public and private faith (in that respect). 

I have read passages of the Koran that call for violence, so...apples and oranges.

You mean, if we ignore some violent parts outright, and pretend that other violent parts don't exist, then christianity doesn't seem as violent as islam..if we focus on the violent parts?  

Genius!

You are conflating Christianity with the OT theocracy. The two covenants are very different in their context, structure, and goals.