A narcissistic person has a limited capability in understanding that what they're thinking is ment to guide them and that it doesn't have to be true or right. You can think about a situation where you walk in the dark and there you see a person standing from a distance. When you get closer, you see it's not a person, it's actually a statue, it just looked like a person because of the shape of the statue. In social situations you can see it like that as well, something can look like something, but what someones body/brain makes out of it is based on what a person learned and what a person can see, hear, etc. Most people have this understanding as a result of life experiences without being consciously aware of that, a narcissistic person however tends to think something is true or right simply because they are thinking it. This also means they are thinking this way about other people, so what a person says it's true/untrue or right/wrong or when it doesn't match with what they are thinking they usually think what the other person thinks is untrue/wrong.

There are all kinds of different types of narcissistic people, but often it tends to go a bit in 2 opposite directions when it comes to talking about themselves. There is a type of narcissistic person who mainly only talks about themself and has very little interest in knowing more about other people other than maybe basic information. They talk about themselves kind of as a way of advertising themselves (not to be confused with a person who is actually advertising a service or product) and may use a lot of values and "wisdom quotes" to show how much of a great person they are. The other type is more covert, usually also more antisocial, barely talks about themself and wants to know a lot about the other to know how to manipulate the person.

Someone who believes that what they think is right, is or at least should be also the reality for another person (so if a person isn't doing what they think is right, then what this person is doing is wrong), I would say this matches with narcissistic behavior. Comparing with other people is a typical thing narcissistic people do as a way to manipulate someone to behave more the way the narcissist wants, there can also be other reasons why a person would compare, but in this situation it looks like you were supposed to act more the way he wanted. A person being very serious about their opinions and seeing them as well thought, I wouldn't see that as narcissistic behavior, because for a narcissistic person their beliefs don't have to be well thought to be true, just them thinking it is enough. Seeing little importance in what other people do, it depens a bit if it's about specific things with well thought reasons, but narcissistic people usually see themselves as more important/valuable than others and see very little value in other people (their lifes and what they do or say). A person having no friends can be a result of narcissism, but it can also have a lot of other reasons.

Narcissistic and antisocial people usually don't feel much and kind of feel more (alive) as a result of what's called narcissistic supply (things that make them feel important/special/needed).
The last thing can be a result of being judged in a positive way based on comparisons, so it was good, because it was better than..., something that's also often a part of narcissism.