I would like to say the four hokage would lose because he was already scare of tobi, yes scare of tobi i mean minato did give his life up in order to make a plan that his son would be stronger then him and would be able to beat tobi. the four didn't get mad about his wife been killed by tobi and go hunt tobi down, i mean the first hokage hunting madara down for the bs he did, he didn't think to him self i'll leave this task up to someone in the future that might be stronger then me. well let me hear what you think on this tobi minato vs rinnegan tobi