All considered: It is true that given all equal social conditions in some races metabolise sugare differently evaluated by HGA1c
G6PD, Sickel cell carrier state, Thalasemia, even simple African American ancestery will metabolise suger differently, that is maybe due to structuer of gulucosilated hemoglobulin.
Higher HGA1c in African Americans is not due to higher blood sugare it is their base line
