Since you mentioned that Hitler wasn't a christian, however the history speaks something else. Enjoy the following link.
http://www.nobeliefs.com/speeches.htm
My feelings as a Christian points me to my Lord and Savior as a fighter. It points me to the man who once in loneliness, surrounded only by a few followers, recognized these Jews for what they were and summoned men to fight against them and who, God's truth! was greatest not as a sufferer but as a fighter. In boundless love as a Christian and as a man I read through the passage which tells us how the Lord at last rose in His might and seized the scourge to drive out of the Temple the brood of vipers and adders. How terrific was His fight for the world against the Jewish poison. To-day, after two thousand years, with deepest emotion I recognize more profoundly than ever before in the fact that it was for this that He had to shed His blood upon the Cross. As a Christian I have no duty to allow myself to be cheated, but I have the duty to be a fighter for truth and justice.... And if there is anything which could demonstrate that we are acting rightly it is the distress that daily grows. For as a Christian I have also a duty to my own people.... When I go out in the morning and see these men standing in their queues and look into their pinched faces, then I believe I would be no Christian, but a very devil if I felt no pity for them, if I did not, as did our Lord two thousand years ago, turn against those by whom to-day this poor people is plundered and exploited.
-Adolf Hitler, in his speech in Munich on 12 April 1922
Looks pretty christian to me.
In the life of nations, what in the last resort decides questions is a kind of Judgment Court of God.... Always before god and the world the stronger has the right to carry through what he wills.
-Adolf Hitler, speech in Munich, 13 April 1923
Doesn't look like an Athiest to me or does he?
Please read the rest of the details. So, If I take him as a christian then Christianity at this point is leading all the genocides in the world, all the killings in our history, single handedly one man is leading in horrible killings. I don't think that Islam or Muslims can even catch his dust. So, again I wonder who is more violent?
Interesting article:
Hitler's Christianity
Some people say Adolf Hitler was an atheist. They blame atheism for Hitler's philosophy. But the historical record shows that Hitler believed in God and was convinced he was carrying out God's will.
Hitler served as an altar boy in the Catholic Church. Growing up in this environment, he surely learned something of the centuries of discrimination and persecution the Church had supported against Jews in Europe.
Former Jesuit theologian Peter de Rosa describes the groundwork Catholic theology laid for Hitler and the Nazis: "[Catholicism’s] disastrous theology had prepared the way for Hitler and his ‘final solution.’ [The Church published] over a hundred anti-Semitic documents. Not one conciliar decree, not one papal encyclical, bull, or pastoral directive suggest that Jesus’ command, ‘love your neighbor as yourself,' applied to Jews."
Not surprisingly, then, Hitler wrote in his book, Mein Kampf: ". . . I am convinced that I am acting as the agent of our Creator. By fighting off the Jews, I am doing the Lord's work." He made essentially the same claim in a speech before the Reichstag in 1938.
Hitler considered himself a Catholic until the day he died. In 1941 he told Gerhard Engel, one of his generals: "I am now as before a Catholic and will always remain so." In fact, Hitler was never excommunicated from the Catholic Church, and Mein Kampf was not placed on the Church's Index of Forbidden Books.
Hitler's biographer John Toland explains Catholicism's influence on the Holocaust. He says of Hitler: "Still a member in good standing of the Church of Rome despite detestation of its hierarchy, he carried within him its teaching that the Jew was the killer of god. The extermination, therefore, could be done without a twinge of conscience since he was merely acting as the avenging hand of god. . .."
Even after World War II, Catholic assistance to the Nazis continued. The Vatican aided the escape of more Nazis than any other governmental or private organization.
The Protestant influence on Nazi Germany was no better, because Hitler is said to have admired the founder of Protestantism, Martin Luther, more than any other German. Among Luther's many denunciations of the Jews, there are such religious sentiments as: "The Jews deserve to be hanged on gallows seven times higher than ordinary thieves," and "We ought to take revenge on the Jews and kill them."
When Hitler was asked in 1933 what he planned to do about the Jews, he said he would do what Christians had been preaching for centuries. And the Nazis carried out their first large-scale pogrom of Jews in honor of Luther's birthday.
Christians constituted a wellspring of support for Hitler. Steve Allen notes that in the 1930s, Nazi Germany "was the most church-affiliated nation in Europe. The German people were almost entirely Catholic and Lutheran. Despite such factors they launched the Holocaust and World War II." Charles Kimball likewise says the Holocaust "would not have happened without the active participation of, sympathetic support of, and relative indifference exhibited by large numbers of Christians."
Also in pre-World War II Germany, corporal punishment was used in the schools and schoolchildren were required to start their days with prayer. Today's advocates of spanking and school prayer should consider that those practices, although supported by religion, proved ineffective in promoting high ethical standards and good behavior among German youth.
Further, Nazi Germany's soldiers wore belt buckles inscribed "Gott mit uns" ("God is with us"). This slogan sounds eerily similar to Ohio's present motto, "With God, all things are possible."
Like many tyrants both past and present, Hitler used the mantle of religion to justify and further his selfish, hateful, and destructive philosophy. By conditioning people to blindly accept the pronouncements of authorities, instead of teaching them to think for themselves, religions often make it easy for such evil dictators and demagogues to succeed.
Seemed prettly much like OBL or GWB.