Both as the post and the person, Siva is superior to Brahma. Lord Siva is an expansion of Lord Visnu, but sometimes a jiva may become Siva's expansion known as Rudra. If a man purely performs the duties of varnasrama for one hundred births, he may become Brahma. In other words, he may attain the position or post of Brahma. In turn, when a person in the post of Brahma carries out his function expertly for one hundred births, he becomes qualified to perform the function of Siva in his manifestation as Rudra...