Grant was extremely slow starter who was knocked down like 10 times in the first round alone. Yes, 6 of them by Golota, Lewis and McCline, but also against much lesser opponents - journeymen and bums. His defence was poor as was his chin and fundamentals. He had pretty good stamina for a big guy, but Joyce has better one plus much better chin, jab and fundamentals. Joyce by KO
Joyce is the better fighter overall, Grant could never take a punch and Joyce throws a lot of punches, Joyce by TKO/KO...