All three are overly powerful I say, madara, hashi and naruto. But I have a few problems with your guys theory's and points,
Regarding hashi's lvl of mokuton compared to madaras current is something to be addressed, madara stated he wasn't going to go easy on naruto this time and released hashi's wood dragon, although the wood dragon was something to marvel, it was stated that hashi used that WD to suppress kyubi yes? And I read somewhere someone saying Jins adds more power to their tailed beast especially if your in complete control of one, which seems to be the reason why madaras WD is having a hard time suppressing naruto BM, sadly that's a bit contradictory, why?
Hashi is the only person to know how mokuton works to its full potential, he fort madara and the kyubi at fall strength before minato sealed it's yin chakra away and the other portions of chakra stolen from the gold and silver brothers, which in turn reduces the kyubi's strength to less then half. If madara is finding it difficult to subdue naruto BM, one would suggest madaras proficiency or inexperience on mokuton to be less then equal to hashi's.