I see Boruto and Kawaki as the reincarnation of Naruto and Sasuke in a way, and maybe Indras and Ashura if we go back. Not by blood or genes, but just to keep the "Final Battle" there, just like how we saw Kawaki and Boruto for the first time having their final battle.
We know the pattern towards Naruto and Sasuke is that the Ashura side is typically more powerful and that Indra side is usually weaker. Like Naruto not trying to kill Sasuke while Sasuke is, Ashura being more powerful than Indra by winning, Hashirama winning against Madara, and once again, 1 Tailed Naruto against CM2 Sasuke (could've won, but didn't by going for his headband). Even if he lost, he showed he was stronger and also not trying to kill him, just bring him back.
More examples is during the pain arc, when Sage Mode Naruto was thriving with power and Sasuke with mangekyou had a new power, but also was getting weaker because of the blindness.
Now for Boruto and Kawaki, this same cycle repeats, Boruto being massively powerful in the time skip just like how Sasuke was in his time skip. Boruto represents more of Sasuke/Indra being more powerful in the beginning while Kawaki represents more of Naruto/Ashura being weaker in the beginning, but making a comeback (since he's able to go toe to toe with Boruto as we saw in the Hidden Leaf Final Battle.
Boruto is strong now, but future predicaments based on this cycle:
Boruto will be plenty powerful as of now, just like in the beginning how it's supposed to be.
Kawaki will begin to grow more powerful, catching up to Boruto.
Around the Final Battle in the Leaf, Boruto will be stronger.
I say Boruto will be stronger because of the foreshadowing that Boruto is on the Ashura side of things, Kawaki representing the Indra side now. And I'd say they would've reversed roles with Boruto being a representative of Ashura and Kawaki of Indra based off looks and the placement of the Final Battle. Kawaki fits the persona of Indra, being a villain and also surprising Boruto. Boruto tightening his headband, showing his care to it just like how Naruto does due to "honor".