My ratings are based on a combination of enjoyment, my opinion on the objective quality of the work (plot, characters, art, music, execution, etc.), and the work in context of its primary genre(s) if any. (<INSERT GENRE> as a -type story and compared to other -type stories.) Sometimes one of these factors wins out over the others.
I tend to have very little patience for any anime that I don't think is at least going to be a 6 or 7+. That being said, my anime ratings are a lot higher than my manga ratings, and I tend to be more lenient with anime in general because I don't watch as much of it.
I am also more lenient with oneshots and OVAs, given the relatively short amount of time in which to tell a story.
Tower of God
Forest of Humans (19+ age restriction)
Ark of Abel
The God of High School
Complete with no MAL page:
Rose Dusk Pale Moon - NAKAMURA ASUMIKO (4/5/13-4/5/13) Oneshot 8
A is for Alice - NAKAMURA ASUMIKO (4/5/13-4/5/13) Oneshot 7
Welcome to Wonderland - NAKAMURA ASUMIKO (4/5/13-4/5/13) Oneshot 7 The Friendly Winter (04/21/13-04/21/13) [Manhwa] 8 Smells Like Green Spirit - NAGAI SABUROU (12/16/13-12/20/13) 9 Added a page for this into the database and it got approved.
Hadaka no Boku - NAKAMURA ASUMIKO (04/04/14) Oneshot 6
Husky and Medley - UNKNOWN (6/11/14) Webcomic 7 Good Excuse - JARYUU DOKURO (10/30/14) Oneshot 8