AJ weighs 240lbs and is built like a house, you feel a man 100lbs heavier than him can walk in off the street and beat him, they won`t take a shot any better than anyone else bigger than 200lbs, no way does this Miller fella take a better shot than Ali did, no way could he take the amount of shots Ali took off Frazier, what about shots to the body, this guy hasn`t got abs like AJ has. As Miller tires fighting carrying all that weight his punch resistance will fade, butterbean weigh tons and was awful.
And why did Armstrong beat Ross? That was a case of a great little un against a great big un, where the little un won!
Weight does not equate to size. The divisions are rough guide rails to ensure the 'Lomachenko/Joshua' scenario can't happen. They assume a norm; that men of equal weight (give or take several pounds) will be of roughly equal size and, therefore, can compete on equal terms. Given that there can be size differences within the same weight division and that it is not unusual to see the smaller boxer beating their bigger opponent, the question is not really 'Does size matter?' Instead, we should ask, 'At what point does the difference in size between two boxers begin to matter?'
The divisions are governed by weight alone though and nothing else. LUFC is purposely being silly when bringing up Miller/AJ as an example. He knows very well that for a 180lb fighter to defeat a 230lb is a bigger ask than a 230lb fighter to defeat a 280lb fighter if all are of decent quality.
So is this how bob foster with superior reach and a much better jab was able to outclass Joe Frazier? Or is this just something your surmise when it works in your favor? I bet Spinks made that Tyson guy look silly with those advantages
I get that... ...Is it a bigger ask for a 180lb fighter to defeat a 230lb, though? That's the kind of fine-tuning of the question I propose: 'At what point does the difference in size between two boxers begin to matter?' Your example also begs the question: 'At what point does the difference in size between two boxers begin to NOT matter?' (or matter less?) What other physical attributes need to be considered, such as height, reach, body type and muscle type, as well as other physical capabilities, not necessarily limited by weight divisions and differences, e.g. strength, coordination, stamina and speed? And, that's before we get to capabilities rooted in skills, strategy and counter-strategy.
Even Einstein would struggle to find the cut off point. Like I said earlier though there is a limit where excess size will be a hindrance and not an advantage.