How does the best Welterweight version of 5ft7in tall 67in reach Walker fare over 15 rounds against: 1) Barbados Joe Walcott with 1910 rings, rules, and refs? 2) Emile Griffith with 1940 RRR? 3) Floyd Mayweather with 1965 RRR? (When eras are so far spread, I like to imagine the fight taking place at a time roughly halfway between the fighters primes at that weight, regarding rounds, weigh-ins, rules, gloves, rules, referees, judges, training, etc.). I see him beating all three in close bouts. What are your thoughts, please? Thank you