Ok I am a new guy here but I have been reading Naruto for a very long time (every Manga up to the current), I have noticed that some of you are either fan boys of specific characters or have weird ideas of what is true power is when it comes to the style of the manga and the creator. ***I specifically read that some of you are doubting that Harishima didn't or couldn't have beaten Madara with all his powers that we have seen to date??? Why would you even think that, when Madara himself said that the 1st Hokage is way beyond any other ninja that the world has ever seen to date? Also no one really knows what the first is capable of, we all just know that he can't be touched. Plus Harishima had collected tons of ancient scrolls with ninja arts and I mean big next level ninjutsu that most have never seen in the ninja world and some were said to be even created or came from the hands of the 6 paths himself.
So I'm gonna say none of you should even doubt the 1st Hokage's power.
Oh an one more thing, for those that think the 1st Hokage's DNA or the Rhinnengan is the reason Madara can use his ultimate Sanoso I have to say that may be wrong, I believe he already had it how else would he know how to open it up? He didn't just say hmmmm I think that I can all of a sudden in the midst of battle do a new trick? Not likely.... REMEMBER most ninjas back then were stronger and mores skilled than the ones now because of the constant wars that went on sooooo of course Madara and the 1st generation of Kages are more skilled than the current ones.... Think about it