According to Wikipedia, the Rape rate in Germany in 1995 was 7.57 per 100,000 people. In 2011, the rate was about 9 per 100,000. Even if we took the unlikely assumption that the entire increase was due to Muslims, German women would still be four times as likely to be raped by a non Muslim German as by a Muslim. By FAR the biggest rape threat to German women comes from their own families. Perhaps we should ban families?
You (and all those ordinary people in the street) need to stop reading neo-fascist hate sites, and calm the FUCK down.
This problem exists in your head. As evidenced by your overly emotional and hyperbolic language. Sure, some Muslims are rapists. So are some Christians, some Hindus, and some Atheists. Your ability to conjure up lurid feats of imagination wherein "The death toll would be even greater were not many plots discovered before the savages had a chance to unleash more terror" is indicative only of the fact that you have successfully had the pants scared off you by hard-right anti-immigration loonies.
The facts do not support your conclusions.