We've always needed a personality check on the two first hokage's, who knew Hashirama would be the Naruto bunshin instead of the younger brother, pretty surprising tbh.
Yeah kinda similar...
Maybe Kishi wants to show that the relation between Naruto & Sasuke is similar to relation of 1st & 2nd Hokages like always fighting brothers or something like that,imo!!
I don't think sasuke and tobirama have same personalities....sasuke was driven by emotions while tobirama was driven by fear, practicality and rational outlook(from his point of view).....tobirama is a lot straightforward like danzo.......he is a strange character....