Who is being superficial?
Everybody has preferences.
Most women prefer a man who is taller than them. A 5’ tall woman with that preference will have an easier time satisfying it than would a 6’ tall woman with that preference.
Most men prefer a woman who is shorter than them. A 6’ tall man with that preference will have an easier time satisfying it than would a 5’ tall man with that preference.
Some people don’t particularly care about the relative heights of themselves and their love interests.
It is a statistical fact that on average, in America, men are taller than women.