From all the posts I see I can tell that people don't want to accept that kawaki can be stronger than Naruto so do I
Why does Kawaki needs to be more powerful so as to win against Naruto? I think I need to remind you guys some things...
1)Naruto is not teh main character anymore... What this means? That he is a side character... What this means? That he lost the power of plot. Which means that he can be killed now that he is a side character.
2)It's not Naruto's story but Boruto's now.
3)Asspulls happened in Naruto Manga from Kishi himself with the biggest onw to be the defeat of Madara! Do I need to remind how plot power made the OP Character to be defeated?
4)A hax tech or somebody else helps Kawaki.
5)Naruto is not a god. He can be killed. Neither he has JJ regeneration or is immune to poisons etc. In the end of the Day he is a human (and a rusty one now...) with power granted by the Sage.
For the above reasons (at least) it could be viewed why Naruto can be killed. Has Kawaki to be powerful enough or more powerful to do it? The answer is NO. Plot or the things can give him the tools to kill Naruto.