I will say that they are equal now or hashirama is stronger because, it says in the manga hashi powers considers as a myth like the sage of the six path Rikoudo sennin himself the monk who created ninjutsu and ninja system, there is something else when tobi was explain to sasuke the battle of madara facing hashi for the first time in his life time, manga chapter 398, you can see madara sweating heavily in fear and knowing he couldn't win against hashi, he brought kurama and still got beaten.
Imaging the things naruto is doing with kurama now and only half of it's power but madara brought kyubi with full power and madara was fighting too but both of them got beaten by hashirama. I believe that during that period, madara was no macth for hashi in any particular ninja skill at all and if hashirama power and the sage's was considered as a myth, can madara beat a myth who got power that people don't believe cause it's too much but now the fight will be even because, hishirama was a master in tai, gen, nin, alive madara right now will give him a tougher fight because, if madara with kurama full couldn't got beaten then he must be far stonger and smarter than both of them combine. It was said, that hashirama captured all the tail beast except kurama and gave them away to other villages and capture kurama and let his wife put it inside her after the fight.
