What's disappointing is that they should both be shown on an adulthood journey to become better fathers, overcoming the failings of their own fathers and childhoods...and yet they are not.
They are just shown to be simply bad dads. The kids are keenly aware of how Naruto and Sasuke are falling short, but neither Sasuke nor Naruto seem to show much inclination to change their ways of being absentee parents.
On who's the worst, I really can't decide. However, in terms of the story, Sasuke experienced MAJOR trauma as a child, more than simply being shunned like Naruto was. So he's the walking wounded. He's got PTSD for miles, and I would expect him never to get over it.
In fact...he's not. He's never had a moment where he's returned from the the dark place he went to after he left Konoha. He's never been welcomed back into the village as a hero (as Naruto did). His forgiveness by the village comes in few sparse words from Kakashi. But the chosen future of his life is still chasing down his demons from the past. The struggle that he was fighting from part 1 is still not over.
So his treatment of Sarada, in the context of the story, feels much more authentic than Naruto's lax treatment of his own children. And his own life in general. And this is a problem because the bar for Naruto is set so much higher than Sasuke.
Naruto was shunned but won recognition in the village by the end of the Pain arc. Next he has problems personally being the hero, but he overcame that too. Fast forward and he wins the affection of the girl he loved since childhood, then wins the war to come home to a hero's welcome, again, and now he's recognized by all the villages/countries.
Along the way he reconnects with both his father and mother in very meaningful ways, and now he can move into his adult life fully understanding their commitment to him, and what they lost in being killed on the day he was born.
So WHHHYYYY then does Naruto go about his adult career and parenting responsibilities with such childish apathy? He was supposed to surpass his elders - so we should see a Konoha at peace but with new threats facing Naruto. Not facebook, booze and ramen. He was supposed to have learn from his parents' sacrifice - so why then does he act neglectful to his own kids/family?
Why is Naruto shown as 'same as usual' instead of growing and changing from the challenges that faced him in childhood? Why hasn't he become the leader/parent who has learned from the mistakes of those who went before him to shape the future of Konoha?
If he were Konoha's best leader and an active parent and still had problems connecting with Boruto, then that would be a real story!
But right now, after seeing NAruto be the same person he was at 15-17, it's no surprise he can't connect with his kid. Naruto's still a kid too!!
But to set Naruto and Sasuke at the same parenting levels, just on either sides of Konoha's walls, is completely wrong. Sasuke was traumatized and never recovered. Naruto had the whole story, 700 chapters, to document his journey of becoming a true hero, and yet even with all the ground covered, he's still basically the same.
I guess it's not that I see one of them as a worse parent than the other. It's that the reasons why they are both terrible parents are terribly out of balance. Sasuke's shortcomings are justified, but Naruto's simply are not. He has no excuse.
Sasuke had no role models, he was only raised with death and revenge. And any mentor was using him as a pawn.
But this was Naruto's story, and he puts those who that have come before him (and taught him by example how to be a good leader and parent) to shame.
(sorry for the long LAP!! lol)
Kishimoto's sentiment has always been that if you have been treated cruelly, that's even more the reason to be kind so they won't ever feel what you felt. That message have been repeated constantly.
It isn't like Sakura and Hinata are poor victims of their husbands, but I think Sakura is worst imo.
Persona 5 hype 
Is she even able to control Bolt? 
Oh well...
