Hiruzen sarutobi look after naruto since he was going out.He visit his him several of times.Naruto did no grow up that much harsh life.Naruto never knew his parent so that was normal for him.Oh YES!!!
I choose Sasuke over Naruto because of the struggle Sasuke went through. Let me put it this way. Naruto had no family and friends from the beginning. That's like growing up dirt poor since the day you were born. Sooner or later, you're going to learn the tricks and trades of surviving in this cold world. That's how some homeless people get by. Sasuke on the other hand grew up happy and had everything taken from him. Let's say he grew up rich. Nice upper class family. One day you find out that you lost everything and now your homeless. You know nothing. You don't know how to fend for yourself. You don't know how to survive. You don't know the tricks and trades of the cold world and now have to learn at a later age. Naruto was used to it and Sasuke wasn't. Then you come to find out that your joint-company planned this and cut you off. Who can you trust?
Sasuke had everything. Had everything ripped from him by his brother. Then finds out that his brother was ordered to do the deed. No matter how much you look at it, I'd want revenge myself. F the village. You can't say Sasuke didn't work hard for what he has. So he was born with Sharingan. Sharingan means nothing. The 1st Hokage beat Madara and he the MS. Sasuke still had to train to become a S-Class Shinobi. Orochimaru and Kakashi trained him. Naruto trained hard as well. Jaraiya and the Toads trained him. Naruto has an advantage here. He is a descendant of the younger son who inherited the Sage's body and Natural energy. He's obviously the reincarnation of the S06p.
They both have their fair stuggles and strengths. I just choose Sasuke because he's an avenger.
Sasuke on the other hand seen his family and his village die by his own brother he taught was good .Itachi placce sasuke under genjutsu and make him see everything he do to his village.Then sasuke have to find some way at his young age to live in konoha with all his baggae(issues)