It's not a search engine. But the search engines it is based on provide surprisingly good results. So, I would be careful with the statement that "other search

It's not a search engine. But the search engines it is based on provide surprisingly good results. So, I would be careful with the statement that "other search engines are not even close to Google". I think that's just a matter of habits. Initially, it feels a bit unusual and maybe even uncomfortable to use not the search engine you've got used to. But after some time you understand that now Google is the one that is uncomfortable for you.