If you do a wider search you may find rankings of these products by the number of stars. In this ordinal ranking system 3 stars are not 3/2 better than 2 stars, they are just better, but
# of stars x # of people giving the stars
does give a numerical idea of the better choice.
Sounds like you need to search with at least four search terms, plus combinations, with or without quotes. And search
"class action" v. [name of product or company]