The OT is more violent than the quran but don't forget to also consider the Hadith and Sura.
Jenkins is wrong to say that Mo only advocates violence in self-defense. Islam is a imperialistic religion and political philosophy. "Convert or die" is the mantra.
Thankfully millions of Muslims are as ignorant of their holy books as most christians are of the bible. The boys learn to recite it in Arabic but mostly have no clue what it actually says. The quickest way to radicalise a Muslim is to have him read his scriptures in his native language.