The .table-responsive class creates a responsive table which will scroll horizontally on screens that are less than 992px wide (if needed). When viewing on anything larger than 992px, there is no difference:

Ranking Site
Índice de Confiabilidade
1 O Antagonista 100%
2 Agora Notícias Brasil 89%
3 Boletim da Liberdade 99%
4 Brazil Journal 89%
5 Ceticismo Político 79%
6 Cristal Vox 69%
7 Conservadorismo do Brasil 59%
8 Diário do Poder 49%
9 Diário do Brasil 39%
10 Epoch Times 1%