Can Naoya Inoue Finish His Career @ Welterweight (?)

They wasn't successful like Pac was as they were rising up in weight, that's the big difference. Mickey Walker is one of the GOATs for this very reason.
Pastrano started at 15 years old but by the time he was 20-21, he was as high as 175lbs which was his final weight class.
Georges Carpentier wasn't successful until much older and by the time he was 20-21 he was already 164lbs+
Pac was at Light Flyweight and Flyweight until the age of around 20-21 when he moved up to Super Bantam. Post-puberty for the overwhelmingly most part + fought in poverty.

 

I was just looking at that thread about Hinata Murata and he's almost 5'10" but he fights at bantamweight. He'd be a growing welterweight or a full grown junior middleweight if he were American. Same thing happened with Nonito Donaire who was always super bantam size but managed to start at flyweight. It's that Asian diet, forget vegetarians or paleo. These guys are abnormally tall and thin compared to their western counterparts. It appears to be specifically an Eastern Asia phenomenon since in Thailand or South America fighters are just short and malnourished.

If you look at Pac's bone structure and dimensions, then he's the same size as Duran or Chavez Sr, and they started out a little higher than him. I think that cultural diet and expectations about weight play a big part in where boxers start out and how many weight classes they are able to jump.

 

Manny started at light fly and went to essentially LMW. That's a span of a crazy 11 divisions today and already 4 divisions south of Hinata Murata. It's like that Hinata dude starts at Bantam, going on to win a belt at 170lb catchweight whilst weighing in at 161lbs, beating ATG's at or near prime in between and other elite fighters whilst becoming an ATG Super Middleweight (imagining super middle has been a historically stacked division like welterweight).
Manny did have bigger dimensions but he was also in poverty conditions and whatever diet he had, it still affected him negatively and yet he won the lineal Flyweight championship against an ATG Flyweight (there's only so far you can go with conditions like that and it just weakens you and you're overall the lesser fighter) and Murata being highlighted here is the most extreme example we've got, but Manny is 5'5. Yeah, he was still a huge Flyweight lol but aggressive fighters like Manny only do well when they enjoy size advantages or being similar size.
I'm confused with regards to Manny's size tbh because he looked great in every weigh in I've seen him in in the lower weight divisions, but yeah I think his size is as you say but he grew into being closer to a more Duran sized. Duran's natural size is LW, Chavez SFW. I think Manny's natural size is like Chavez but now he has the frame of a big Lightweight. Floyd for example has the size of a fully fledged Welter now. (Edited last bit).

 

Partial amateur record of Naoya Inoue:http://www.boxing-scoop.com/show_boxer.php?boxer_ID=14990

 

I agree with everything.

 

All he has to do is get with Ariza...get them shakes, and use HGH and he will be fine.

 

He can. Is it wise? No!

 

If Pac give him the secret recipe then im pretty sure with his frame he could go all the way up to 154lbs.

 

His father was saying 126 is where they expect him to finish his career.

 

Narvaez was a 39 year-old, who had one fight in America, and got beaten up by Donaire. He was no comparison to Hernandez, more like Deontay Wilder, but 10 years older.