Komi question

Why can ranked komi only be 7.5 when AI says 6.5 is more even? In Nipponese rules.

Japanese 19x19 uses 6.5 komi
Chinese 19x19 uses 7.5 komi
AI thinks 7 komi is the closest we can get to fair, but for some reason human Go players outside of New Zealand are terrified of the supremacy of including tied games as a legal result :man_shrugging: