Comparing fighters of different generations is simply subjective - diets and sports science changes are huge influences on professional sports and were not on the greats of the past like Johnson, Marciano or Dempsey.
Tyson Fury is unbeaten, skilled, and huge. He would have been a challenge to any boxer that has ever lived, in my opinion. I do not think, no matter how good, that fighters of fourteen stone could have competed against him. If he didn't have his range of skills, if he was as immobile as giants of the past like Primo Carnera, then perhaps, but not with his skill set, his savvy, and his adaptability.
Tyson Fury is unbeaten, skilled, and huge. He would have been a challenge to any boxer that has ever lived, in my opinion. I do not think, no matter how good, that fighters of fourteen stone could have competed against him. If he didn't have his range of skills, if he was as immobile as giants of the past like Primo Carnera, then perhaps, but not with his skill set, his savvy, and his adaptability.