History is written by winners
Winners will show aspects that serve them best, not every facts or way to see them if you see my point
This is patently untrue.
History is written, tautologically, by the people who write history, and those people ended up on the losing side of a given struggle (whether political, military, social, or whatever) as often as not. Thoukydides'
History of the Peloponnesian War, arguably the first work of history
ever, was written from the standpoint of a citizen of the
polis that
lost the war in question, and who was attempting to create an exculpatory tradition that absolved himself and his political allies of guilt for entering the war and for the subsequent Athenian defeat. Napoleon himself
lost his wars, but due to the assiduous actions of his followers and to his own efforts in creating his memoirs, he successfully transformed his image from Antichrist and Scourge of God into a true Romantic hero (from Dal'kannith to Khryl, as it were), the latter of which has largely endured down to the present day among the general populace. The ongoing popularity of 'Lost Cause' works written by former southern traitors and their admirers to explain away the defeat and destruction of the slaveholding, morally bankrupt Confederacy and still allow them to claim that the Confederacy was intrinsically superior to any alternative surely also indicates that the losers have a continuing appeal in historical annals.
The list could go on
ad infinitum. Eumenes of Kardia. Demosthenes. Erich Ludendorff. Patrice MacMahon. The White Russian refugees after 1917. Jiang Jieshi. Atatürk. The overwhelming majority of literate Japanese society after 1945. You get the idea.
One of the more amusing side effects of all this is that it throws your own list into a different light.
For example: you claimed that Napoleon promoted European unity, "modernization", and lauded him for his huge empire. A huge empire he may have had, but he never pretended that he was even remotely interested in European unity. His empire was for himself in the first place, and the French in the second. The rest of Europe was reduced to colonies and vassals, both of which Napoleon squeezed dry of funds and soldiers, or to enemies (and frequently both at the same time). As for his "modernization", when it was a conscious effort and evenly applied, it was done solely for the goal of increasing Napoleon's own power and resources. And he frequently did things that were not so modern, either. His Civil Code extended the powers of the patriarchy like never before. He created a new class of military aristocracy leeching off the states of Europe. His economic colonization of Europe - what is sometimes referred to as the Continental System for reasons of Napoleonic propaganda - dislocated certain major industries and wiped out local economies. And, of course, most obviously, he ******ed the political development of France by making the whole country into a personal monarchy, more Mafia kingpin than even a king, much less president or prime minister. Napoleon might have taken a few steps 'forward' in some respects by rationalizing certain regional governments to make his war machine more effective, but he also unquestionably took several steps 'back' in most other respects.
Does this mean that you're 'not allowed' to think that Napoleon was a great statesman or ruler or whatever? Of course not. You're right: a lot of history is about points of view, and nobody can take your opinion away from you. That's what historiography is about: a conversation between historians (or cacophony, as seems to be the case more often than not) involving exchanging points of view about the past. But at the same time, history is about
wie es eigentlich gewesen - "how it actually was" - and the opinions one forms about history should be based on fact, not fantasy. And your opinions seem, in the main, to be based on the latter and not the former.
Owen's general lack of helpfulness aside, he did have a decent point. It would behoove you to read what historians have written about Napoleon or whomever, or at the absolute minimum what people in this forum have written about that person, to get a sense of whether your opinions are rooted in fact.