I fail to see how this proves the statement, that shinobi remain the same no matter the era.:sdo3:
Naruto's parents lived through war era, he lived through era of temporary peace and then experienced what it feels like to be a victim of war after being outcast many years. And now that he is a Hokage, he must know about Hashirama's era, since he has access to all the archive materials, so yeah he has a good understanding of what it means to be a shinobi. So, at the end of the day, Naruto knows just as much as Sasuke.