I think the more fair comparison would be to show THE SAME random subset for each entry. I.e. same X words for all result sets. Otherwise, it might happen that

I think the more fair comparison would be to show THE SAME random subset for each entry. I.e. same X words for all result sets. Otherwise, it might happen that a superior result would just show words that don't even have good results, while an inferior subset would get better covered words.