Aside from what values one holds as to 'superiority', the status of that superiority is, at least in principle, objective. All of reality is, in fact, since it exists materially and without exception adheres to logical principles.
And it is quite common to hear the mantra that 'nobody is better than anybody else'. We get it in newspapers, sociology, pseudo-philosophy, television, government schooling and everywhere else. Most people in practice do recognize differences between people - because they're not suicidal or totally irrational - but the prevailing mantra of western democracies is egalitarianism.