To take a mild example, we don't look at federal countries and assume it affects citizen's life in a radical way that can be straight attributed to the federal nature of it. Germany biggest differences from France probably aren't because of that. Sure it has an impact, but not in an easily predictable way.
Authoritarian regime are prone to abuse, but that's not enough to guarantee it will be managed worse than the worse democratic countries. We've have democracies fully melt down and becoming literal hell on earth.
I don't intend to praise authoritarian regimes and don't see them as sustainable, but IMHO there is a lot more to a country than just that.