How findings are ordered in the comparison explorer varies across differences, frequencies and similarities.
Differences are ordered based on statistical significance. All differences presented in the platform meet a confidence threshold in excess of 95% (oftentimes in excess 99%), meaning there is a high degree of confidence that all findings are not happening by chance. However, the differences at the top of the list will be those the platform has the highest degree of confidence in.
Frequencies and similarities are ordered highest to lowest for the primary data set you are looking at. The primary data set is determined based on the relevant tab you have selected on the comparison explorer.