Not very knowledgeable here. Allison's career includes many wins in Asia against Asia's best. Whether an Allison in her late forties can beat the cream of today's Asian crop is of no particular significance.
Allison Fisher is the very definition of a champion, and played her best in countless big spots. Same is true of Balukas, Corr, and Ga Young. We may say the same one day of Sha Sha Liu, Siming Chen, or Han Yu, but they haven't earned it yet, so let's reserve judgment.