Boruto easily wins this no cap. It's his series after all, dattebasa.
Regardless of how many asspulls he'd get in order to win, he'd still win, cuz he's the asspull King and apparently he can do anything there is.
He loves a kid he Just met more than his own children, as per shown in manga facts:
Those are true love feelings and emotions right there. It is such an emotional panel.
This is something Naruto has never demonstrated for Bort or Himiwiri in canon.
Looks like Kawaki just happens to be the main one, but there are many other kids like him out there:
Guess now we may have the answer of who Sarada, Mitsuki, Sasuke & co. will be fighting in the timeskip.
Gotta love how Sarada's fighting style can resemble Itachi's so much. Sometimes she likes to be a trickster in battle, just like him - owning her opponents without even having to move herself. Either let a genjutsu or a shadow clone do the work.