This manusctipt by Zhou et al is the secondary analysis of two different 780 trials; main results are the gretaer benefits in glycemic control in those participants with a very high A1c at baseline.

Appropriate litarature on the topic is cited and the article is easy to read. Methodology is clearly described, issues are mentioned at the end The tables and figures, also those chosen for supplement accompagne the results.

After having tried really hard, I did not find any issues in this important work.

The suggestion of the other reviewer appear answered sufficiently.