Who had the best cardio or stamina in each weight class in boxing history?

Fury & Joyce have special stamina for 270 pound men

 

Hard to say Pacman @ 147, I find that impossible since he was old and fat lol.
Surely there are many with better stamina than him

 

Mate you've just gone against ya own argument you mentioned how many punches he threw and then said it doesnt matter how many punches he threw ?? What's ya point you actually trying to make

 

Don't ever recall seeing Mayweather breathing heavy lol but people obviously won't want to give him any type of credit

 

My point is you're an idiot and now I'm blocking you. Good bye.

 

We not talking about his prime talking about him as a welterweight

Wow get a grip mate clearly to immature for a adult conversation

 

That's raw efficiency not raw stamina.