I think I've figured out why Kishi always portrays men superior to the women.
As a child, he probably told his classmates about his dreams, that one day he will write a manga everybody will read (insert dattebayo here), but the girls mocked him and told him to stop dreaming. I guess every female character in Naruto portrays a girl he knew irl. But he made the men superior because they didn't believe in his dreams. That's why women never have, and never will have a chance of being superior in Kishi's manga.
And voíla, here we have another example. Boruto is just too damn stronk, idek what to say anymore. Sasuke probably didn't want Salada in the first place because she is a girl that's why he sticks with Boruto and trains him instead.
That's all folks.
P.S. I think I've f*cked up the accent on voila, even though I've had French in school but f' it.
