PART 1:
Naruto's Power: Kurama's chakra
Sasuke's Power: The curse mark
Part 2
Naruto swears never to use Kurama's chakra again. To replace it, he gets a new power called sage mode.
Sasuke loses his curse mark and gains a new power called the mangekyo sharingan
The beginning of the war
Naruto increases one of his powers, in his case his original power, by obtaining KCM and BM.
Sasuke increases on of his powers, in his case, his second power, by obtaining EMS.
The climax of the war (and probably the Manga)
Naruto combines his powers by mixing Bijuu mode and Sage mode
Sasuke combines his powers by mixing EMS with the Curse mark (it is probable that he will move to curse state 2 soon)
Naruto's Power: Kurama's chakra
Sasuke's Power: The curse mark
Part 2
Naruto swears never to use Kurama's chakra again. To replace it, he gets a new power called sage mode.
Sasuke loses his curse mark and gains a new power called the mangekyo sharingan
The beginning of the war
Naruto increases one of his powers, in his case his original power, by obtaining KCM and BM.
Sasuke increases on of his powers, in his case, his second power, by obtaining EMS.
The climax of the war (and probably the Manga)
Naruto combines his powers by mixing Bijuu mode and Sage mode
Sasuke combines his powers by mixing EMS with the Curse mark (it is probable that he will move to curse state 2 soon)