Asura Avatar Naruto. Bijuu Susanoo Sasuke. JJ Madara. Kaguya. Hagoromo. Hamura,
Hashirama>BSM Naruto. Give them the same mode and it's RSM Hashirama>BSM Naruto, except Naruto has the ability to take in shitloads of Nature Energy, so he'd be a tier above Hashirama. RSM Hashirama would be above RSM Naruto w/o Asura's Avatar comfortably, but not in the same tier as the one who can use it. Bijuu Susanoo Sasuke is equal with Asura Avatar Naruto, thus he's stronger than Hashirama. JJ Madara is also in the same tier. DB hypes him to have the true power of Rikudo, and he was already approaching Hagoromo's level w/ one eye and the Juubi. Full power Madara has the Shinju and his other eye on top of that.
After all, giving him half of Hagoromo's power isn't putting him on par with people who have half his power and then some, a guy who is hyped to be on Hagoromo's level, and Hagoromo and Hamura themselves. Kaguya is self explanatory.
And no, Hashirama doesn't get Naruto's ability just because he has the same mode. Kurama had to gather that energy for Naruto. Hashirama has no Bijuu.