There's absolutely no way to assess the likelihood of lowering your fasting glucose via eating more honey without knowing what you're already eating. The paper

There's absolutely no way to assess the likelihood of lowering your fasting glucose via eating more honey without knowing what you're already eating. The paper itself describes the characteristics of the control groups of the included trials: > Trial comparisons included the participant’s usual diet (70% of studies), sucrose (15%), high-fructose corn syrup (6%), and mixed comparators (9%). Kind of hard to know what "the participant's usual diet" means, but I'm just gonna go out on a limb here and say the intervention probably helped people who were otherwise eating a bunch of table sugar, HFCS, or both, and didn't help if you weren't eating sugar to begin with. The average diet of a person participating in studies like this is probably close to an average American diet, that is, high in added sugar. Don't expect honey to be some kind of miracle panacea food. It's just better than table sugar and HFCS.