Then you need to do some more research. Christian reconstructionists/dominionists advocate biblical law - theonomy - no more, no less - in everyone's daily lives. Including of course, traditional biblical punishments for traditional biblical "crimes".
According to Gary DeMar, a prominant reconstructionist author, the foundation of Reconstructionism is a combination of three Biblical doctrines:
1. Regeneration of the individual, through an intimate relationship with Christ
2. Individuals guiding their lives closely by following a specified subset of Biblical laws
3. Promoting of the world-wide Kingdom of God.
The double standard is doubly clear: you use extremist interpretations of Islam to paint the entire faith. If someone does the same for Christianity - you go on about "tortured interpretations" etc. etc.
In other words you are perfectly happy using extremist views to make your argument about Islam, but are unwilling to entertain a similar argument for Christianity despite evidence that there are Christian sects today who advocate those extremist views.
Hypocrisy.
