The two are not even close to alike, and if you think so then you really should brush up on your history.
Prior to Napoleon’s rise to power was the French Revolution and the establishment of the French Republic, which frightened the other european countries as they were all established monarchies and the being afraid that they would be overthrown by their people just as the french overthrew their king made them form the first coalition of great britain, prussia, austria, spain, sardinia and naples. In short, France whooped their asses even while having a civil war and General Bonaparte made all of them surrender with the exception of the british who remained diplomatically against france. In 1798, napoleon was having some fun in egypt and the second coalition was formed with Austria, Great Britain, the Kingdom of Naples, the Ottoman Empire, Papal States, Portugal, Russia, Sweden against France. France suffered defeat until napoleon was able to return in 1799 where he took control of the government, formed the consulate,created military reserves, and in short stomped on the austrians, kicked the russians out of the war and forced the austrians to peace which in turn made the british sign for peace, which was the only time peace was achieved in europe for a long time. Britain then breached the treaty by occupying malta, and the french interfered in swiss politics and the treaty was broken and the 3rd 4th 5th coalitions etc formed with the desire over the course of the wars changing from a desire to stop napoleon to restoring the monarchy. So yeah when I classify good guys and bad guys in a conflict i would rank napoleon in the good guy column and give a big f u to king george.
While Hitler and Napoleon are not exactly alike, it is reasonable to compare the two. It's been done many times before, and Hitler was an admirer of Napoleon who respectfully visited his tomb.
There are many parallels not just between Napoleon and Hitler, but also the French Revolution, the Russian Revolution, and the Nazi rise to power.