We don't all hear the same. Some can not hear very well at all. Others can't hear the upper registers or lowers. Some hear more in one ear than the other. Some only hear with one ear. If you mean we all can detect sounds, yes, most everyone can do that, but we don't hear the same.
That's like trying to say we all see alike. A friend of mine lost an eye in an accident which had me covering one of mine to see just what it's like to see the world with one eye. Try driving like that. It takes some getting used to, but it's not the same.