I think, Sasuke answered like Indra since he has his chakra. The sage would also give him his powers since Sasuke reminds him of his other son. The difference is that Naruto and Sasuke are friends which makes the difference between them and the Originals/Madara & Hashirama. I also believe they either get both the Rinnegan (both chakras are needed to get it) and a So6p mode OR some kind of full potential of their ancestors like Naruto complete Sage mode and able to mold every chakra type (fire, water,...) and Sasuke perfect Susano with new yet unknown abilities..