Here's what Gemini said about a prime Holmes vs prime Charles battle

A hypothetical matchup between Ezzard Charles and Larry Holmes pits two of boxing's most skilled, yet underappreciated, heavyweight champions against each other. Holmes holds advantages in size, reach, and power, while Charles (the "Cincinnati Cobra") boasts superior technical skill, speed, and versatility, having excelled from middleweight to heavyweight.

Key Matchup Factors:
Larry Holmes: Known for one of the best jabs in boxing history, exceptional endurance, and a 20-fight title defense streak. He was a dominant force, often fighting tall and using his 81-inch reach to control opponents.
Ezzard Charles: A master counter-puncher with incredible ring IQ and a 96-win resume. While a natural light-heavyweight, he was a dominant heavyweight champion with 58 knockouts.
Stylistic Clash: Charles’ style is often compared to Michael Spinks—a technical boxer-puncher who could navigate inside or outside. Holmes, however, was rarely bothered by smaller fighters, and his jab and endurance would be difficult for Charles to overcome.
Historical Standing: Both were overshadowed in their respective eras—Charles following Joe Louis, and Holmes following Muhammad Ali.


Expert Consensus:
Most analysts would favor Larry Holmes in a competitive fight due to his superior size and punishing jab, but Charles’ technical ability and toughness would ensure a high-level battle.