To your last point. If that were true then it follows that all governments are exactly as good (or as bad) as each other. You don't seriously believe that every single government on earth have equal merit though? Plenty of people have unjustified opinions of certain governments but that doesn't mean that every opinion is unjustified and there are no better/worse governments.

If I asked you which government was better, Sweden or North Korea, it's not exactly a stretch to say there is an objective answer. A governments job is to manage the nation for the people, and some countries do a far better job of that than others.