This is also a very good point. We often forget that we aren't comparing fighters the same weight when we compare eras. That's a reason why I often fancy GGG over earlier guys. If we take them as they came in the ring, he's have 10-15lb on some of them. Not exactly fair especially when he's hitting as hard as he is at essentially a division higher.
Counterpoint: if RJJ doesn't KO GGG early, he is the guy getting stopped late. This content is protected
Fantastic point. Hard to compare eras because back then, a lot of these guys had to make weight on the morning of the fight, or afternoon, or even at ringside just before the fight started. Guys today making weight 24 hours in advance quite probably would be fighting one, two, or even three weight divisions higher if they had to make weight under the same circumstances, or if they were weighing what they actually weigh on fight night today.
Words on a page can't properly describe how fast his hands actually were, how he threw his jab, how he moved, how fleet or flat footed he was, how defensively responsible he was, how dirty or clean he fought. Measuring his H2H ability and how skilful he actually was is guesswork.
Hearns cut the same amount of weight GGG did and he was fine in the same day weigh-in era. "His walking around weight is normally between 168 and 170 pounds" (https://www.ringtv.com/597199-from-...ds-four-weeks-to-get-ready-for-marvin-hagler/). Compared to "What’s his weight right now?" "Probably 168, 169 before training. He’s usually about ten pounds above the weight at this time." (Abel Sanchez, https://stiffjab.com/trading-with-gennady-golovkin-trainer-abel-sanchez-4caa2e6dc738). He fought as a welter and junior middle in the ammies and never went up to middle until he was 21. In his prime, his in-ring weights were listed between 168-171. The idea that Golovkin is a LHW, that he could have naturally fought at LHW in the same day weigh-in era, and that fighters from the same day weigh-in era didn't cut weight or rehydrate are all baseless. And no, he's not the guy who only beat Canelo once, he's the guy with the most title defences in MW history, who beat Canelo twice, and who beats everybody else on that poll. Put some respeck on his name.
Counter counterpoint: GGG would just be another routine fight for Jones. Hed be lucky to win half a round.
Sorry, I just don't see beating a 150 pound Dempsey battling tuberculosis on the level of taking out a LaMotta, Hearns or Valdez... and we're talking head to head here, so the misty eyed nostalgia-laden myths of the past do not factor. I just don't see Fitz having the depth or quality of resume at 160 to match with the others here. Again, if we were talking pound for pound, his argument gets strong.
I won't get into how green or experienced Canelo was for the Mayweather fight since that's been discussed ad nauseam but I think you're confusing resume comparisons with H2H judgement. H2H is judged on performances, not wins. Greb has incredible wins, but no filmed performances, making him impossible to rate H2H imo. I think it's a bit weird for you to hold the Mayweather loss against Canelo so much because Mayweather was smaller but not hold the Bartfield loss against Greb (who was also a welter and who Greb outweighed) when Greb was much closer to his prime than Canelo was too.