You are changing the subject from Muhammad's character to a criticism of Christianity. Islam is Muhammad; without him and what he was, there is no Islam.
Buddha, Zoroaster, Jesus and other holy men preached love and tolerance. Those who profess to believe in them have no excuse for killing and plunder. However:
Ishaq:510 “We ask Thee for the booty of this town and its people. Forward in the name of Allah.’ He used to say this of every town he raided.”
Ishaq:327 “Allah said, ‘A prophet must slaughter before collecting captives. A slaughtered enemy is driven from the land. Muhammad, you craved the desires of this world, its goods and the ransom captives would bring. But Allah desires killing them to manifest the religion.’”
There are plenty of juicy bits on plunder in the Old Testament. Mohammed also frequently spoke of the need for love. Moreover, your argument is moot because Jesus is considered a prophet in Islam. The Muslims simply do not consider Jesus to have been the son of God.