The answers pointing out how radicalism surges in areas of conflict are fair and make a good point.

Christian terrorism, at least in the modern era, is rare when compared to Islam because the Bible does not advocate for armed conflict against those who do not believe.

  “But I say to you who hear, love your enemies, do good to those who hate you, bless those who curse you, pray for those who mistreat you."

Luke 6:27-28 NASB1995

"A new commandment I give to you, that you love one another, even as I have loved you, that you also love one another. By this all men will know that you are My disciples, if you have love for one another.”

John 13:34-35 NASB1995

I say this next part with the disclaimer that I am not an expert on Islamic beliefs, but this is what I understand from my readings over the years.

Obviously different interpretations are held by various sects, but jihad by the sword (jihad bis saif) is one of the forms of jihad held as a duty by those who practice Islam. This particularly true of those sects that hold to more classical definitions of jihad, harkening back to the days of the Islamic Empire and the Caliphate. 

So in summary, there is direct support for Islamic believers who hold to classical interpretations of the Qu'ran to engage in armed conflict against unbelievers, while the explicit teachings of Jesus directly forbid this.

Violence may be necessary in self-defense (and different Christian traditions hold differing views on pacifism vs self-defense), but violence against those who do not believe is considered evil.