June Byers is one of the greatest women's champions of all time. She took the title off Mildred Burke and basically ended her 20 years of dominating the sport. She was very popular, often times her matches would steal headlines in the papers away from the men. And she was working in the same time period as such legendary titans as Lou Thesz, Buddy Rogers, Verne Gagne, and Gorgeous George. As a worker and a name she was considered to be "up there" with them, in a general sense.
While there had been plenty of screw jobs before, the match she had against Burke turned into a shoot and Byers basically stole the title. This was one of the times when real life was stranger than fiction. The bad blood that Byers/Wolfe/Burke had for each other carried over into multiple lawsuits and public slandering at every turn. Even the likes of Russo couldn't have written a story that juicy. And it created allot of buzz for the industry.
Leilani Kai was a good champion during the resurgence of women's wrestling in the 80's and was one of Moolah's proteges, but she doesn't compare to one of the pioneers that went on to dominate the sport on nearly the level that Burke and Moolah had done before.
June Byers should win here comfortably.