Ali was said to have poured plaster into his bandage. Also, one of the guys in Ali's corner supposedly had a gun. Inoki's side also brought the shoes with iron plate, but Inoki didn't use it.
Seiji Sakaguchi, Kotetsu Yamamoto, and Yoshiaki Fujiwara in Inoki's corner were ready to put their lives to protect Inoki. If one of them actually won, it might have caused a disaster. It was truly the fight in an ultimate situation.