Honestly, I think by simplistically broad stroking entire "eras" you're just incapable of discussing specific fighters' case by case. You've been given case by case examples from multiple members here then revert to exactly where you started. Foreman fought in the 70's so therefore he was more 'advanced' aka tech, timing, defense, skilled than Louis who fought in the 30's. Did they not fight in said eras. Is that how this paint by numbers works? Redundant rubbish.