I think they are both really important but gunpowder is way more important, gun powder lead on to many different more advanced inventions, but the printing press...there's not much important stuff that came with it after. And what power does the printing press have? Gunpowder has much much more, it's much more intimidating unlike the printing press. I don't know much about these things so that's why this is way retarded. You guys can disagree.