It is not different to c-squared, that is true, as c-squared re-steems everything it upvotes. C-cubed do a daily post on the posts it upvotes, so the feed in this case is a different way of viewing that post.
Curie is different. Curie do not re-steem every post that they upvote, or provide a post containing all of the upvotes, so viewing their curation feed is the only real way to see the posts that they are upvoting in one place.
It is not different to c-squared, that is true, as c-squared re-steems everything it upvotes. C-cubed do a daily post on the posts it upvotes, so the feed in this case is a different way of viewing that post.
Curie is different. Curie do not re-steem every post that they upvote, or provide a post containing all of the upvotes, so viewing their curation feed is the only real way to see the posts that they are upvoting in one place.