Is Americans really enjoying THAT much more freedom than North Korea?

It's questionable.

1st, quoting my previous post that freedom of speech is in fact, an illusion for the most part. Sure, our First Amendment guarantees it, but so does the North Korean constitution. Let's examine both in detail:

The US Constitution, it says, "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech." However, the Patriot Act permits indefinite detention of any citizen suspected of terrorism. See links here:
https://en.wikipedia.org/wiki/Indefinite_detention_without_trial
https://en.wikipedia.org/wiki/Patriot_Act
Under the Patriot act, your freedom of speech is rather not excercisable. Any words caught as a potential "threat", even as a joke could result in the government label you as a potential terrorist. There has been controversial cases as stated above that citizens and LEGAL immigrants were tortured and imprisoned without basic human dignity, all with at best, circumstantial evidence. In addition, the digital information age has put even greater limits as to what a citizen could say. Tweets get twisted around and taken out of context. Sure, you can "freely" express your opinion, but the consequence is you may get killed by a lunatic who just happens to disagree with you.

In North Korea, the State Constitution says "Freedom of Speech is guaranteed under the North Korean Constitutions, as long as it is not against the State and our Great Leader" While this puts some restriction on what citizens could say, it is not that different. You may still say whatever you believe, but similar to being detained in Guantama Bay, you'll be detained indefinitely in Camp 17 without basic human dignity for saying anything against the Government. At least, citizens of North Korea aren't allowed to carry a sniper rifle so they don't have to fear some lunatic shooting you for something you said during the day.

Bottom line, if someone's holding a gun to your head and say "say whatever you want", that's NOT free speech.

2nd is Censorship. United States Government has been caught many times for Censoring and invading people's privacy such as tapping phone lines and Censoring internet posts. See link here, and let's not forget about what Snowden disclosed.
http://www.huffingtonpost.com/2012/01/30/british-tourists-deported-for-tweeting_n_1242073.html
There was another story about two kids being arrested for playing a war video game in which a chat transcript contains keywords flagged by the DHS. They were labeled "potential terrorist suspects" as well. Seems like the US Government can label anyone, at anytime with or without evidence; or that they just don't like you.

Let's see how North Korea does this: hmmm, obviously, the entire media and digital contents are Censored. You say something against the State, you are imprisoned or executed. Well, at least you are told upfront and they don't do it behind your backs.

3rd, Elections: can anyone say, with 100% confidence that our elections are NOT fixed? That is, the primaries and the presidents, and the senates are indeed elected by the people? Did you actually count the votes yourself? Do you know whom the guy next to you has voted for? Well, if you don't know, then you can't know for sure the elections are NOT fixed. Today's technology should allow encrypted votes such that all votes are public information and you should be able to see your vote in some database with an unique identifier, but others don't know it's you. This way, there is no cheating and everyone would know their vote is truly accounted for. So why haven't we done this?

Let's look at North Korea: well, it's the Kim family dynasty. At least you know what you are getting. There's no secret about that and you don't need to waste your time casting a useless vote.

4th, Private Enterprises: YES! Finally, we do have something that's far superior than North Korea and is the reason why we are enjoying a much higher standard of living, but Bernie Sanders is here to take it away -- Goodbye Capitalism, Greetings, Socialism. Wait, don't the North Koreans call themselves Socialists too?