Good on you for conceding the 1AD terrorism point, but here is the problem though, Christians started doing messed up things THREE CENTURIES AFTER JESUS AND THE APOSTLES. That should show you Jesus Christ and the teaching of the apostles had nothing to do with the messed up things the church did.
Islamic terrorism on the other hand started with Mohammed and his companions when they slaughtered/persecuted Jews and Christians. Muhammad or instance tortured and killed a Jewish man for money and then banged his wife on the same day. Mohammed instructed war and terror on unbelievers as the Quran teaches. Mohammed himself said he had been made victorious through terror in the heart of his enemies from a three day journey.
So going back to your original comment do you now see why your assertion that my logic of saying Islamic terrorism started with Muhammad could equally be applied to Christianity fails?