Why don't we just end this here.
Naruto has SM, FRS, rasengan, and his shadow clones and summons
Sasuke has his MS, regular sharingan, fire techs and lighting techniques and summons
BM, KCM, curse mark, and EMS are powers they were not born with, have had bestowed on them by someone or something.
In these cases both Naruto and Sasuke had to DO something in order to utilize that power:
Sasuke had to actually put his dead brother's eyes into himself
Naruto had to first separate the kyuubi's chakra and use it by force, and then befriend him later
Sasuke had to get bit by Orochimaru to get curse mark (i think he suffered enough )
Now, am I right in sayin BM, KCM, CM and EMS are abilities they were not born with but did something in order to actively use and master? Can we just say these powers are in their arsenal and it is their power to use as they see fit?
edit: sorry for making two threads on this. Just wanted to clear the air a bit after my last one