Humm....once again, cero...yeah, its already quite strong. It, along with Gran Rey and Bala, pesquisa, and a few other abilities, are rather like their own form of "kido": a set of personal things they can have and others can't. No Quincy has Hierro, after all.
Its in this manner that Shinigami have kidou, Quincy have Ginto and a few other things, and...well, Super Humans have a large freedom and range of abilities to pursue.