I was thinking it's working more like Torrent but maybe I'm wrong ?

The main concept of Blockchain is to hold data (transactions) forever, impossible to modify or delete. We don't want that in web, an article for example can be modified. The Blockchain usage will be good if we want an archive system. The Blockchain is an archive system where present data can't be touched, it's just possible to add new data, but in IPFS, data can be removed, so it's different I guess