Vs Cowboys and Fijian Warriors: This just comes down to a lack of evidence for several weapons on the Leopard Society's end. For both battles everything except the claws, there isn't I could find that even gets close to point to their use by the Leopard society. Especially with the Iwisa and Isihlangu which are weapons used in entirely different regions than where the Leopard Society is.
https://deadliestfiction.fandom.com/wiki/User_blog:123chaseyoung/Cowboy_vs_Leopard_Society