Totally agree, and that's why I think Hitler was far worse than Lenine, Stalin or Mao. As soon as he decided to launch the final solution and to create extermination camps, he became worse than anyone who lived on this planet.
That is where you are wrong in my opinion.

The final solution and the death camps were not thought up by Hitler, only approved by him. It was his underlings, like Himmler, who really drove the massacre of the Jews. Now of course signing off on, or approving, such things makes him evil beyond evil, but..

Stalin took time every day to complile lists of hundreds of thousands of people, many he knew personally, to be killed. Every single day he personally chose people to be killed with no rhyme or reason.

Hitler's genocide was more clinical. A percieved problem - the Jewish population - had to be taken care of, and it was in the fastest, most efficient way. In a way, Hitler was removed from his genocide, in my opinion.

Stalin's genocide, on the other hand, was very much a personal endevour. The level at which he drove it, and personally contributed in it, was much greater than that of Hitler.

I personally believe that Hitler truly believed the Jews were bad. In that way it can be said that Hitler acted in what he thought was the best interest of Germany, although in the most evil of ways. Stalin killed purely to preserve his own power, and often simply because he didnt trust certain groups of people.

Both were evil, but I dont agree that Hitler was worse than Stalin.. it isnt logical.