There's a difference. Katawa Shoujo was released for free, the Fate VN was not. A Fate series torrent is an illegal copy, so it is almost certainly against forum rules.
That being said, it's really hard to get a copy of the VN without paying exuberant amounts, so I'm not saying you shouldn't be using a torrent, but at least keep torrent proliferation off of the public parts of the forum, as it's not unheard of for forums to be held responsible for their users' actions.