Sports

Because the fighting styles. Ali even when young wouldn’t have thrown a lot of punches. And when he did throw down, he tended to hit. So, 74 Ali while smarter, his fighting style was dependent on his opponent wearing out - or rather, punching out. The 74 Ali loses to 64 Ali. Plus, both Alis’ were sharp shooters when it came to hitting the target - no wasted motion in 64 and not enough energy in 74 to avoid the cuts, etc.