Better? Different, yes, better is in the eye of the beholder. First, Imperial Germany is a democracy, a rather liberal one with a strong socialist party and a growing middle class, the trends are towards a better democracy, a wealthier nation and not unlike the rest of Europe or the USA. Victory alters who and how and when, but pre-war the German economy was top tier, it was orderly, maybe boring and stiff but not oppressive, it had its share of classism, racism, bigotry, intolerance and ugliness, but does not look out of step with her peers. Will victory make it all better?
Depends. We will likely not see the Bolsheviks come to power in a revolution led by Lenin, we then do not see a reactionary spasm of suppression or yet more revolution inspired, so no Fascism, no Nazis, no Soviet Union, none of the intervening blood letting. Germany puts France to the heel, possibly too Russia, maybe breaks up Russia into a smattering of puppets, A-H carries on, so too the Ottomans, no fragmenting the Middle East. Japan stays aligned to the British and struggle to become a better democracy.
We still have the Congo, and the Armenian genocide, Pogroms in Russia, burning of witches, deep distrust between Protestant and Catholic, antisemitism, all of the colonial era, ethnic, racial, religious and other hates galore. Europeans are not the nicest of people, they have fought lots of wars, killed lots of themselves, others, anyone really. Is a German dominated Europe worse off than one dominated by the French, the Romans, the Americans? For some yes, for most it is about the same. I doubt it is anywhere as bad as the Soviet era, but a lot of non-Germans will hate being under that cultural, economic and likely orderly boot. Pride, bragging rights and past greatness will keep the average folks disliking the foreigners, envy, sleights and ignorance will let them dislike one another, but most of them will marry, work, retire, live, laugh, cry, die, new wars, stocks and bonds will fail, transportation and utilities will collapse, politicians will steal, elites will be caught in scandals, taxes will go up, warranties will expire the day before it breaks and that world will be as imperfect as those that we know.
But in all that, maybe, maybe, the course gets shunted to a better track, hatreds fade, hunger subsides, wars fail, humanity organizes its affairs less medieval, hopefully we do not require so much evil to heed the better angels.