No, neither sex is inferior to the other. Biologically, we have evolved to have different roles just like any other member of the animal kingdom, notably primates. For example;
Women are generally smaller, lighter, have a higher fat content due to the presence of breast and childbearing hips, have a better sense of smell and can distinguish colors easier. They also have XX chromosomes, which makes them slightly superior genetically.
Men are generally bigger, heavier, have a higher muscle content due to the evolution of protective roles, can see movement better, and excel at finding patterns. They also have XY chromosomes which unfortunately make they slightly inferior from a genetic point of view. This is because the Y chromosome has deteriorated over time, to the point where it now has 88 units versus the X chromosome which has 1000 units. This allows for more sex-linked disorders (autism, color blindness, etc) to attach to, and affect the Y chromosome.
However, it is important to note that most of these traits are generalizations, and that males and females alike are to be valued in all societies.