"I do not think that any person is superior to any other." This is a pretty absurd statement.
https://www.dictionary.com/browse/superior
2. above the average in excellence, merit, intelligence, etc.:
3. of higher grade or quality:
The way I'm using the term the two definitions are more apt. For example saying "The Spurs are superior team to the Nuggets" it instantly is a statement that can be debated by sports fans however there generates no moralistic concern. So why then can we not do the same with people? In fact we can! You interview two people for a job and you will pick the superior candidate. The one who provides the most value to the organization. None of this is wrong, people can be evaluated by a metric, the metric used is obviously going to be subjective but most people can agree on some common traits that are universally good. (Honesty, Loyalty, Ethical Behavior, Intelligence, Ability)
Actually yes, it does in fact make them more valuable. If I had the choice of saving two strangers that I know nothing about except that one is a world renown scientist on the cutting edge of creating medicine and the other one is a librarian. Which do you think I should save? I would go for the person who could provide more to the world.
Alternatively if I do know some things about two people, maybe not their profession but their criminal record. I have a murdering rapist on one hand and on the other I have a druggie. I'd save the druggie and let the murdering rapist die. Why? Because the murdering rapist is less worthy, he is inferior as a person than the druggie.
The biblical quote is appropriate however does nothing to alter the argument on weather people can be evaluated by their abilities and actions. God is essentially saying "I saved you from slavery and then starvation, the fact that you are doing fine now doesn't mean you can forget what I've done for you." It is of course important for people to remain humble, again I use the example of Bill Gates, brilliant guy but he doesn't go around talking about how great he is.
The parable of the master giving his servants resources is an example of what I was originally getting at. If God has given you much, then much is expected of you. Noblesse Oblige can be religious or not. Hell we could get inspiration from it from Spider-Man "With great power comes greater responsibility."
The message isn't "Hey some people are better than others so you lesser people have to serve them." It should be "Some people are better than others, so use your talents to uplift the people who don't have them." Which of course is why I find value in Church and Charity in giving people a helping hand as opposed to eternal welfare state that merely enables people to exist without requiring growth from them.